{"id":6149,"date":"2011-09-14T06:00:31","date_gmt":"2011-09-13T21:00:31","guid":{"rendered":"http:\/\/www.suzukikenichi.com\/blog\/?p=6149"},"modified":"2011-09-14T04:48:04","modified_gmt":"2011-09-13T19:48:04","slug":"why-did-my-pagerank-drop-suddenly","status":"publish","type":"post","link":"https:\/\/www.suzukikenichi.com\/blog\/why-did-my-pagerank-drop-suddenly\/","title":{"rendered":"Google\u30c4\u30fc\u30eb\u30d0\u30fc\u306ePagaRank\u304c\u7a81\u7136\u4e0b\u304c\u3063\u305f\u7406\u7531"},"content":{"rendered":"<p class=\"p20-b al-r small\">[\u30ec\u30d9\u30eb\uff1a\u521d\u7d1a]<\/p>\n<blockquote><p>Google\u30c4\u30fc\u30eb\u30d0\u30fc\u306ePageRank\u304c\u4e0b\u304c\u3063\u305f\u539f\u56e0\u306f\u3069\u306e\u3088\u3046\u306b\u8abf\u3079\u3089\u308c\u308b\u304b\uff1f<\/p><\/blockquote>\n<p>\u3053\u306e\u8cea\u554f\u306b\u3001Google\u306eMatt Cutts(\u30de\u30c3\u30c8\u30fb\u30ab\u30c3\u30c4)\u6c0f\u304c\u56de\u7b54\u3057\u307e\u3057\u305f\u3002<\/p>\n<p><iframe loading=\"lazy\" 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allowfullscreen><\/iframe><\/p>\n<p>\u30dd\u30a4\u30f3\u30c8\u3092\u7b87\u6761\u66f8\u304d\u3067\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30c4\u30fc\u30eb\u30d0\u30fc\u306ePageRank\u306f\u5e74\u306b3\u301c4\u56de\u66f4\u65b0\u3055\u308c\u308b\u3002<\/li>\n<li>\u968f\u6642\u66f4\u65b0\u3057\u306a\u3044\u306e\u306f\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u306bPageRank\u306b\u3070\u304b\u308a\u6c17\u3092\u53d6\u3089\u308c\u3066\u307b\u3057\u304f\u306a\u3044\u304b\u3089\u3002<\/li>\n<li>0\u301c10\uff08\u306e\u6574\u6570\u5024\uff09\u306b\u4e38\u3081\u3089\u308c\u3066\u3044\u3066\u3001\u5fc5\u305a\u3057\u3082\u4fe1\u983c\u3067\u304d\u306a\u3044\u30c7\u30fc\u30bf\u3068\u3044\u3046\u3053\u3068\u3067\u306f\u306a\u3044\u3002<\/li>\n<li>PageRan\u304c\u4e0b\u304c\u308b\u7406\u7531\u306e1\u3064\u306f\u3001\u3068\u3066\u3082\u8a55\u4fa1\u306e\u9ad8\u3044\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u304c\u306a\u304f\u306a\u3063\u305f\u3053\u3068\u3002<\/li>\n<li>\u3082\u30461\u3064\u306e\u7406\u7531\u306f\u3001\u5185\u90e8\u30ea\u30f3\u30af\u304c\u304a\u304b\u3057\u304f\u306a\u3063\u3066\u3044\u3066\u6b63\u898f\u5316\u304c\u7570\u5e38\u306a\u3068\u304d\u3002<\/li>\n<li>\u3082\u3063\u3068\u3082\u3042\u308a\u304c\u3061\u306a\u306e\u306f\u3001\u30ea\u30f3\u30af\u3092\u58f2\u3063\u3066\u3044\u308b\u3068\u304d\u3002<\/li>\n<li>\u7a81\u713630%\u3082PageRank\u304c\u4e0b\u304c\u3063\u305f\u3068\u3057\u305f\u3089\u3001PageRank\u3092\u6e21\u3059\u30ea\u30f3\u30af\u3092\u58f2\u3063\u3066\u3044\u3066\u305d\u308c\u306f\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u9055\u53cd\u3002<\/li>\n<li>\u6709\u6599\u30ea\u30f3\u30af\u3092\u524a\u9664\u3057\u3066\u304b\u3089\u3001\u518d\u5be9\u67fb\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u3001\u300c\u30ea\u30f3\u30af\u3092\u58f2\u3063\u3066\u3044\u305f\u305f\u3081\u306bPageRank\u3092\u4e0b\u3052\u3089\u308c\u305f\u3051\u3069\u3059\u3079\u3066\u524a\u9664\u3057\u306e\u3067\u4fe1\u983c\u3092\u56de\u5fa9\u3057\u3066\u307b\u3057\u3044\u300d\u3068\u4f1d\u3048\u308b\u3002<\/li>\n<li>\u554f\u984c\u304c\u306a\u304f\u306a\u3063\u3066\u3044\u3066\u518d\u3073\u30ea\u30f3\u30af\u3092\u58f2\u308b\u3053\u3068\u304c\u306a\u3044\u3068Googel\u304c\u4fe1\u7528\u3067\u304d\u308c\u3070\u3001PageRank\u306f\u5143\u306b\u623b\u308b\u3060\u308d\u3046\u3002<\/li>\n<\/ul>\n<p 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href=\"\/\/www.suzukikenichi.com\/blog\/integrating-www-and-non-www-by-301-redirect\/\">www\u3042\u308a\u3068www\u306a\u3057\u3092\u6b63\u898f\u5316<\/a>\u3057\u3066\u3044\u306a\u304f\u3066\u3001\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u304c\u4e21\u65b9\u306b\u5f35\u3089\u308c\u3066\u3044\u308b\u3068\u304d\u306f\u305d\u306e\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u3092\u7d71\u5408\u3067\u304d\u306a\u304f\u3066\u305d\u308c\u305e\u308c\u306b\u5206\u6563\u3057\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<br \/>\n\u3082\u3063\u3068\u3082www\u3042\u308a\u30fb\u306a\u3057\u306b\u9650\u3063\u3066\u8a00\u3048\u3070\u3001\u4eca\u306eGoogle\u306f\u4f55\u3082\u3057\u3066\u3044\u306a\u304f\u3066\u3082\u307b\u3068\u3093\u3069\u6b63\u898f\u5316\u3057\u3066\u304f\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3068\u306f\u3044\u3048<a href=\"\/\/www.suzukikenichi.com\/blog\/review-of-duplicate-content\/\">\u91cd\u8907URL<\/a>\u306f\u907f\u3051\u308b\u3079\u304d\u3067\u3001PageRank\u304c<a href=\"\/\/www.suzukikenichi.com\/blog\/google-farmer-update\/\">\u843d\u3061\u308b\u4ee5\u4e0a\u306e\u5f71\u97ff<\/a>\u304c\u767a\u751f\u3057\u5f97\u307e\u3059\u3002<\/p>\n<p>3\u756a\u76ee\u3082\u3042\u308a\u304c\u3061\u306a\u306e\u3067\u8aac\u660e\u306f\u3044\u3089\u306a\u3044\u3067\u3057\u3087\u3046\u3002<br \/>\nPageRank\u306e\u9ad8\u3055\u3092\u30a6\u30ea\u306b\u3057\u3066\u30ea\u30f3\u30af\u3092\u58f2\u3063\u3066\u3044\u308b\u306e\u3067\u201c\u898b\u305f\u76ee\u306e\u201dPageRank\u3092\u4e0b\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>Matt Cutts\u6c0f\u306f\u8a9e\u3063\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u524a\u9664\u306e\u3088\u3046\u306a\u91cd\u5ea6\u306e\u30da\u30ca\u30eb\u30c6\u30a3\u304c\u8ab2\u305b\u3089\u308c\u305f\u3068\u304d\u3082\u30c4\u30fc\u30eb\u30d0\u30fc\u306ePageRank\u304c\u4e0b\u304c\u308a\u307e\u3059\u3002<br \/>\n\u4e0b\u304c\u308b\u3068\u3044\u3046\u304b\u3001\u30b0\u30ec\u30fc\u30a2\u30a6\u30c8\u3055\u308c\u3066PageRank\u305d\u306e\u3082\u306e\u304c\u8868\u793a\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<br \/>\nGoogle\u5074\u306e\u30d0\u30b0\u3068\u3044\u3046\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u7070\u8272\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u3066\u304b\u3064\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u6d88\u3048\u3066\u3044\u305f\u3089\u6df1\u523b\u306a\u4e8b\u614b\u306b\u9665\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002<\/p>\n<p>Matt 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