{"id":5501,"date":"2010-04-15T05:55:44","date_gmt":"2010-04-14T20:55:44","guid":{"rendered":"http:\/\/www.suzukikenichi.com\/blog\/?p=5501"},"modified":"2010-04-15T04:42:12","modified_gmt":"2010-04-14T19:42:12","slug":"how-much-pagerank-do-we-lose-through-301-redirect","status":"publish","type":"post","link":"https:\/\/www.suzukikenichi.com\/blog\/how-much-pagerank-do-we-lose-through-301-redirect\/","title":{"rendered":"301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3067PageRank\u306f\u3069\u306e\u304f\u3089\u3044\u5931\u308f\u308c\u308b?"},"content":{"rendered":"<p>Google\u306eMatt Cutt\uff08\u30de\u30c3\u30c8\u30fb\u30ab\u30c3\u30c4\uff09\u6c0f\u304c<a href=\"\/\/www.suzukikenichi.com\/blog\/some-pagerank-is-lost-though-301-redirect\/\">301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u3088\u3063\u3066PageRank\u304c\u5931\u308f\u308c\u308b<\/a>\u3068\u767a\u8a00\u3057\u305f\u3053\u3068\u306f\u3001SEO\u306e\u696d\u754c\u306b\u5c11\u306a\u304b\u3089\u305a\u30a4\u30f3\u30d1\u30af\u30c8\u3092\u4e0e\u3048\u3066\u3044\u305d\u3046\u3067\u3059\u3002<\/p>\n<p><a href=\"\/\/www.suzukikenichi.com\/blog\/it-never-means-you-should-not-use-301-because-you-will-lose-pagerank\/\">301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u4f7f\u3046\u306e\u3092\u30b9\u30c8\u30c3\u30d7\u3059\u308b\u3079\u304d\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u306f\u3042\u308a\u307e\u305b\u3093<\/a>\u304c\u3001\u305d\u308c\u3067\u3082\u30ea\u30f3\u30af\u30b8\u30e5\u30fc\u30b9\u304c\u6e1b\u308b\u3068\u805e\u3044\u3066\u3001\u5c0e\u5165\u306b\u4e8c\u306e\u8db3\u3092\u8e0f\u3080\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u3082\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u300cPageRank\u304c\u6e1b\u5c11\u3059\u308b\u300d\u3068\u8a00\u3063\u3066\u3082\u3044\u3063\u305f\u3044\u3069\u306e\u304f\u3089\u3044\u6e1b\u5c11\u3059\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<p><a href=\"\/\/www.suzukikenichi.com\/blog\/interview-with-tedster\/\">WebmasterWorld\u306etedster<\/a>\u306f\u300c<a href=\"\/\/www.suzukikenichi.com\/blog\/301-redirect-losts-pagerank-down-to-85-percentages\/\">\u5143\u306e85%\u7a0b\u5ea6\u3057\u304b\u6e21\u3089\u306a\u3044<\/a>\u300d\u3001\u3064\u307e\u308a15%\u524d\u5f8c\u304c\u5931\u308f\u308c\u308b\u3068\u5206\u6790\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f<a href=\"http:\/\/www.seomoz.org\/\">SEOmoz<\/a>\u306e<a href=\"http:\/\/twitter.com\/randfish\">Rand Fishkin<\/a>\uff08\u30e9\u30f3\u30c9\u30fb\u30d5\u30a3\u30c3\u30b7\u30e5\u30ad\u30f3\uff09\u6c0f\u306f\u30011\uff5e10%\u304c\u306a\u304f\u306a\u308b\u3068\u30b3\u30e1\u30f3\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u30572\u4eba\u3068\u3082\u6839\u62e0\u3068\u306a\u308b\u5177\u4f53\u7684\u306a\u30c7\u30fc\u30bf\u3092\u63d0\u793a\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u3057\u304b\u3057\u9069\u5f53\u306a\u6570\u5b57\u3092\u5165\u3063\u3066\u3044\u308b\u306f\u305a\u306f\u306a\u304f\u30012\u4eba\u3068\u3082\u591a\u304f\u306e\u8457\u540d\u306a\u4f01\u696d\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u304b\u304b\u304b\u3048\u305fSEO\u30b3\u30f3\u30b5\u30eb\u30bf\u30f3\u30c8\u3067\u3059\u304b\u3089\u3001\u305f\u304f\u3055\u3093\u306e\u4e8b\u4f8b\u304b\u3089\u5f97\u305f\u5b9f\u4f53\u9a13\u3092\u3082\u3068\u306b\u3057\u3066\u306e\u7d50\u8ad6\u3067\u3057\u3087\u3046\u3002<br \/>\n\u50d5\u306f\u7591\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u3068\u306f\u8a00\u3063\u3066\u3082\u3001\u3084\u306f\u308a\u5177\u4f53\u7684\u306a\u8a08\u6e2c\u7d50\u679c\u304c\u77e5\u308a\u305f\u3044\u3082\u306e\u3067\u3059\u3002<\/p>\n<p><a href=\"http:\/\/www.seerinteractive.com\/blog\/\">Seer Interactive SEO Blog<\/a>\u3067\u3001301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u3088\u3063\u3066\u3069\u306e\u304f\u3089\u3044PageRank\u304c\u5931\u308f\u308c\u305f\u306e\u304b\u3092\u3001\u30c7\u30fc\u30bf\u3092\u5143\u306b\u691c\u8a3c\u3057\u305f<a href=\"http:\/\/www.seerinteractive.com\/blog\/301-redirect-test-how-much-link-juice-are-you-losing\/2010\/04\/09\/\">\u7d50\u679c\u304c\u516c\u958b<\/a>\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u65b0\u3057\u3044\u30c9\u30e1\u30a4\u30f3\u540d\u3078\u30b5\u30a4\u30c8\u3092\u4e38\u3054\u3068\u79fb\u8ee2\u3057\u305f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30c7\u30fc\u30bf\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u79fb\u8ee2\u306e\u524d\u5f8c\u3067\u306e\u30b5\u30a4\u30c8\u5168\u4f53\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u6bd4\u8f03\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/\/www.suzukikenichi.com\/images\/totaltraffic.jpg\" alt=\"301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u524d\u5f8c\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\" \/><\/p>\n<p>\u65b0\u3057\u3044\u30c9\u30e1\u30a4\u30f3\uff08\u8d64\uff09\u306e\u65b9\u304c\u5e73\u5747\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u5168\u4f53\u3068\u3057\u3066\u306f\u82e5\u5e72\u4e0b\u304c\u3063\u305f\u7a0b\u5ea6\u3067\u3057\u3087\u3046\u304b\u3002<br \/>\n301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u3088\u3063\u3066\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u6e1b\u308b\u7a7a\u767d\u671f\u9593\u304c\u307b\u3068\u3093\u3069\u5b58\u5728\u305b\u305a\u3001\u6bd4\u8f03\u7684\u901f\u3084\u304b\u306b\u79fb\u884c\u51e6\u7406\u304c\u9032\u3093\u3060\u3088\u3046\u306b\u898b\u3048\u308b\u306e\u306f\u30dd\u30a4\u30f3\u30c8\u306e1\u3064\u3067\u3059\u3002<br \/>\n\u305f\u3060\u3053\u3061\u3089\u306e\u30c7\u30fc\u30bf\u306f\u5b63\u7bc0\u6027\u306e\u8981\u56e0\uff08\u7a81\u51fa\u3057\u3066\u4e0a\u6607\u3057\u3066\u3044\u308b\u90e8\u5206\u306f\u5e74\u672b\u5e74\u59cb\u306e\u4f11\u6687\uff09\u304c\u7d61\u3093\u3067\u304f\u308b\u3068\u601d\u308f\u308c\u308b\u3067\u3001\u3042\u307e\u308a\u53c2\u8003\u306b\u306f\u306a\u3089\u306a\u3044\u3068\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u6b21\u306e\u30b0\u30e9\u30d5\u306f\u6ce8\u76ee\u306b\u5024\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/\/www.suzukikenichi.com\/images\/enginetraffic.jpg\" alt=\"Google\u3001Yahoo!\u3001Bing\u305d\u308c\u305e\u308c\u306e301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u524d\u5f8c\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\" \/><\/p>\n<p>\u6708\u9593\u691c\u7d22\u6570\u304c550,000\u56de\u306e\u30c8\u30c3\u30d7\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u306e\u691c\u7d22\u30a2\u30af\u30bb\u30b9\u3092Google\u3001Yahoo!\u3001Bing\u306b\u5206\u3051\u3066\u30b0\u30e9\u30d5\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u771f\u3063\u5148\u306b\u6c17\u3065\u304f\u306e\u306fGoogle\u3068\u4ed6\u306e2\u3064\u306e\u30b5\u30fc\u30c1\u30a8\u30f3\u30b8\u30f3\u306e\u9055\u3044\u3067\u3059\u3002<\/p>\n<p>Google\u306f\u3001301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u898b\u4e8b\u306b\u51e6\u7406\u3057\u3066\u3044\u308b\u3001\u3064\u307e\u308aPageRank\u3092\u5b8c\u5168\u306b\u6e21\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002<br \/>\n\u305d\u308c\u3069\u3053\u308d\u304b\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u308f\u305a\u304b\u306a\u304c\u3089\u4e0a\u6607\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306b\u5bfe\u3057\u3066Yahoo!\u306f\u6ce2\u304c\u3042\u308a\u3001\u76f4\u5f8c\u306e\u4e00\u6642\u70b9\u3067\u306f\u305d\u3053\u305d\u3053\u623b\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u5f90\u3005\u306b\u4e0b\u304c\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Bing\u306f\u304a\u305d\u307e\u3064\u3067\u3059\u3002<br \/>\n\u300c\u3069\u3046\u3057\u3061\u3083\u3063\u305f\u306e\uff1f\u3001\u5927\u4e08\u592b\uff1f\u300d\u3068\u5fc3\u914d\u306b\u306a\u308a\u307e\u3059\u306d\u3002<br \/>\nBing\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u5411\u3051\u30d5\u30a9\u30fc\u30e9\u30e0\u306e\u7ba1\u7406\u8005Brett Yount\uff08\u30d6\u30ec\u30c3\u30c8\u30fb\u30e4\u30f3\u30c8\uff09\u6c0f\u306f\u3001Bing\u306f301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u51e6\u7406\u3059\u308b\u306e\u306b2\u30013\u56de\u306e\u30af\u30ed\u30fc\u30ea\u30f3\u30b0\u304c\u5fc5\u8981\u3060\u3068<a href=\"http:\/\/www.bing.com\/community\/forums\/t\/652285.aspx\">\u30b3\u30e1\u30f3\u30c8<\/a>\u3057\u3066\u3044\u3066\u6642\u9593\u304c\u304b\u304b\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<br \/>\n\u305f\u3060Brett Yount\u6c0f\u306f\u3001Bing\u306f301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u4f55\u306e\u554f\u984c\u3082\u62b1\u3048\u3066\u3044\u306a\u3044\u30574\u56de\u306e<a href=\"\/\/www.suzukikenichi.com\/blog\/double-redirect-%E3%83%80%E3%83%96%E3%83%AB-%E3%83%AA%E3%83%80%E3%82%A4%E3%83%AC%E3%82%AF%E3%83%88\/\">\u30c1\u30a7\u30fc\u30f3\u30ea\u30c0\u30a4\u30ec\u30af\u30c8<\/a>\u307e\u3067\u51e6\u7406\u3067\u304d\u308b\u3068<a href=\"http:\/\/www.bing.com\/community\/forums\/p\/651008\/9558568.aspx#9558568\">\u81ea\u4fe1\u3042\u308a\u6c17\u306b\u30b3\u30e1\u30f3\u30c8<\/a>\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\nBing\u306f\u3084\u3063\u3068301\u3092\u4e0a\u624b\u306b\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3068\u3044\u3046<a href=\"http:\/\/www.webmasterworld.com\/msn_microsoft_search\/4016150.htm\">\u30ec\u30dd\u30fc\u30c8<\/a>\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u3061\u3087\u3063\u3068\u602a\u3057\u3044\u3068\u3053\u308d\u3067\u3059\u306d\u3002<\/p>\n<p class=\"p60-t\">\u3053\u306e\u5206\u6790\u3092\u3057\u305f\u30d6\u30ed\u30b0\u8a18\u4e8b\u6295\u7a3f\u8005\u304c\u5f97\u305f\u7d50\u8ad6\u306e\u91cd\u8981\u70b9\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n<ul class=\"b\">\n<li>301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u3088\u3063\u3066PageRank\u3092\u542b\u3081\u3066\u4f55\u3089\u304b\u306e\u60c5\u5831\u306f\u5931\u308f\u308c\u3066\u3044\u308b\u306e\u304b\u3082\u3057\u308c\u306a\u3044\u304c\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u6e1b\u5c11\u3057\u306a\u304b\u3063\u305f\u3057 \u305d\u308c\u3069\u3053\u308d\u304b\u4e0a\u6607\u3057\u305f\u3002<\/li>\n<li>\u3064\u307e\u308a\u3001301\u306b\u3088\u3063\u3066\u79fb\u8ee2\u524d\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u8a55\u4fa1\u306f\u79fb\u8ee2\u5f8c\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u4e0a\u624b\u306b\u6e21\u3055\u308c\u308b\u3002<\/li>\n<li>\u305f\u3060\u3057\u3001Yahoo!\u3068Bing\u306b\u306f\u5f53\u3066\u306f\u307e\u3089\u306a\u3044\u3002<\/li>\n<\/ul>\n<p>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u6e1b\u308b\u3053\u3068\u304c\u306a\u304f\u3001\u9006\u306b\u4e0a\u304c\u3063\u305f\u306e\u306f\u5168\u4f53\u306e\u691c\u7d22\u30dc\u30ea\u30e5\u30fc\u30e0\u304c\u4f38\u3073\u305f\u53ef\u80fd\u6027\u3082\u3042\u308b\u3057\u3001\u79fb\u8ee2\u5f8c\u306b\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u304c\u5897\u3048\u305f\u306a\u3069\u306e\u7406\u7531\u3067\u691c\u7d22\u9806\u4f4d\u304c\u4e0a\u304c\u3063\u305f\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<br \/>\n\u3057\u305f\u304c\u3063\u3066\u30c7\u30fc\u30bf\u5206\u6790\u306e\u6761\u4ef6\u306f\u5b8c\u5168\u306a\u3082\u306e\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<br \/>\n\u3053\u308c\u306f\u5206\u6790\u8005\u3082\u8a8d\u8b58\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3067\u3059\u304c\u3001\u8cb4\u91cd\u306a\u30c7\u30fc\u30bf\u3068\u3057\u3066\u53c2\u8003\u306b\u306a\u308b\u3053\u3068\u306f\u9593\u9055\u3044\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3010Source\u3011<br \/>\n<a href=\"http:\/\/www.seerinteractive.com\/blog\/301-redirect-test-how-much-link-juice-are-you-losing\/2010\/04\/09\/\">301 Redirect Test: How Much Link Juice are YOU Losing? &#8211; Seer Interactive SEO Blog<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u3088\u3063\u3066PageRank\u304c\u5931\u308f\u308c\u308b\u3068Google\u306eMatt Cutt\u304c\u5148\u65e5\u660e\u3089\u304b\u306b\u3057\u305f\u3002\u3044\u3063\u305f\u3044\u3069\u306e\u304f\u3089\u3044\u306ePageRank\u304c\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3046\u306e\u3060\u308d\u3046\u304b\uff1f 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