{"id":6792,"date":"2012-12-06T06:00:57","date_gmt":"2012-12-05T21:00:57","guid":{"rendered":"http:\/\/www.suzukikenichi.com\/blog\/?p=6792"},"modified":"2012-12-06T06:01:16","modified_gmt":"2012-12-05T21:01:16","slug":"404-errors-do-not-harm-crawl-index-and-ranking","status":"publish","type":"post","link":"https:\/\/www.suzukikenichi.com\/blog\/404-errors-do-not-harm-crawl-index-and-ranking\/","title":{"rendered":"404\u30a8\u30e9\u30fc\u306f\u6570\u304c\u591a\u304f\u3066\u3082\u30af\u30ed\u30fc\u30eb\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u30e9\u30f3\u30ad\u30f3\u30b0\u306b\u60aa\u3044\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044"},"content":{"rendered":"<p class=\"p20-b al-r small\">[\u5bfe\u8c61: \u521d\u7d1a]<\/p>\n<p><img decoding=\"async\" src=\"\/\/www.suzukikenichi.com\/images\/ignore-404s.png\" alt=\"404\u306f\u7121\u8996\u3059\u308b\" 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href=\"https:\/\/productforums.google.com\/forum\/#!msg\/webmasters\/NXNSk8Akw54\/FSd94qg85J4J\">\u6b21\u306e\u3088\u3046\u306b\u8aac\u660e<\/a>\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote>\n<p>\u5b58\u5728\u3057\u306a\u3044URL\u3092\u30ea\u30f3\u30af\u304c\u6307\u3057\u793a\u3057\u3066\u3044\u308b\u3068\u3059\u308b\u306a\u3089\u3001\u30ea\u30f3\u30af\u5207\u308c\u306e\u6570\u306f\u30b5\u30a4\u30c8\u306e\u30af\u30ed\u30fc\u30eb\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u30e9\u30f3\u30ad\u30f3\u30b0\u306b\u901a\u5e38\u306f\u307e\u3063\u305f\u304f\u5f71\u97ff\u3057\u306a\u3044\u3002\u307b\u3093\u306e\u5c11\u3057\u3067\u3042\u3063\u3066\u3082\u4f55\u767e\u4e07\u3067\u3042\u3063\u3066\u3082\u3060\u3002<\/p>\n<p>\u30ea\u30f3\u30af\u5207\u308c\u304c\u3042\u3063\u305f\u304b\u3089\u3068\u3044\u3063\u3066\u30b5\u30a4\u30c8\u306e\u8cea\u304c\u4f4e\u3044\u3068\u307f\u306a\u3059\u3053\u3068\u306b\u306f\u306a\u3089\u306a\u3044\uff08\u5b58\u5728\u3057\u306a\u304f\u306a\u3063\u305fURL\u3092\u6280\u8853\u7684\u306b\u9069\u5207\u306b\u51e6\u7406\u3057\u3066\u3044\u308b\u306e\u3060\u304b\u3089\u3080\u3057\u308d\u3044\u3044\u8a3c\u62e0\u306a\u306e\u304b\u3082\u3057\u308c\u306a\u3044\u3068\u500b\u4eba\u7684\u306b\u306f\u601d\u3063\u305f\u308a\u3082\u3059\u308b\uff09\u3002<\/p>\n<p>404\u3084410\u306e\u30af\u30ed\u30fc\u30eb\u30a8\u30e9\u30fc\u304c\u30b5\u30a4\u30c8\u306e\u30af\u30ed\u30fc\u30eb\u983b\u5ea6\u306b\u60aa\u3044\u5f71\u97ff\u3092\u53ca\u307c\u3059\u3053\u3068\u3082\u306a\u3044\u3060\u308d\u3046\u3002404\u3084410\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u901a\u5e38\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3088\u308a\u3082\u5c11\u3057\u3060\u3051\u901f\u304f\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u30b5\u30fc\u30d0\u30fc\u304c\u8fd4\u3059\u3053\u3068\u3082\u3042\u308a\u5f97\u308b\u304b\u3089\u30af\u30ed\u30fc\u30eb\u983b\u5ea6\u304c\u5897\u3059\u3053\u3068\u3055\u3048\u3042\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n<p>\u6ce8\u610f\u3059\u308b\u70b9\u3082\u3042\u308b\u3002\u30af\u30ed\u30fc\u30eb\u30a8\u30e9\u30fc\u3092\u8d77\u3053\u3057\u3066\u3044\u308b\u30ea\u30f3\u30af\u304c\u6b63\u5e38\u306a\u30da\u30fc\u30b8\u306b\u5bfe\u3057\u3066\u5f35\u3089\u308c\u3066\u3044\u305f\u3068\u3057\u305f\u3089\u3082\u3061\u308d\u3093\u3001\u305d\u306e\u30ea\u30f3\u30af\u306f\u6a5f\u80fd\u3057\u306a\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u6b63\u5e38\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u79c1\u305f\u3061\uff08Google\uff09\u304c\u767a\u898b\u3057\u306b\u304f\u304f\u306a\u308b\u3002<\/p>\n<p>\u8a00\u3044\u63db\u3048\u308b\u306a\u3089\u3001\u6b63\u3057\u3044URL\u3067\u306f\u306a\u304f\u9593\u9055\u3063\u305fURL\u306b\u5185\u90e8\u30ea\u30f3\u30af\u3057\u3066\u3044\u308b\u306a\u3089\u305d\u308c\u306f\u4fee\u6b63\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3060\u308d\u3046\u3002<\/p>\n<p>\u300c\u901a\u5e38\u306f\u300d\u3068\u8a00\u3063\u305f\u306e\u306f\u6280\u8853\u7684\u306a\u3082\u306e\u3067\u3042\u3063\u3066\u5927\u591a\u6570\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304c\u6c17\u306b\u304b\u3051\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3082\u306e\u3067\u306f\u306a\u3044\u3002\u5177\u4f53\u7684\u306b\u8a00\u3046\u3068\u3001\u30b5\u30fc\u30d0\u30fc\u3084\u30b5\u30a4\u30c8\u306b\u8ca0\u8377\u3092\u304b\u3051\u3059\u304e\u308b\u3053\u3068\u3092\u9632\u3050\u305f\u3081\u306b\u30b5\u30fc\u30d0\u30fc\u3042\u305f\u308a\u306e\u30af\u30ed\u30fc\u30eb\u3092\u79c1\u305f\u3061\u306f\u5236\u9650\u3057\u3088\u3046\u3068\u3059\u308b\u3002<\/p>\n<p>\u4fa1\u5024\u306e\u3042\u308bURL\u306e\u4ee3\u308f\u308a\u306b\u4e0d\u9069\u5207\u306aURL\u3092\u30af\u30ed\u30fc\u30eb\u3059\u308b\u3053\u3068\u306b\u306a\u3063\u305f\u3089\u305d\u306e\u4fa1\u5024\u306e\u3042\u308bURL\u3092\u518d\u30af\u30ed\u30fc\u30eb\u3059\u308b\u306e\u306b\u3088\u308a\u9577\u3044\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u5ff5\u306e\u305f\u3081\u518d\u78ba\u8a8d\u3057\u3088\u3046\u3068\u3059\u308bURL\u3088\u308a\u3082\u3059\u3067\u306b\u77e5\u3063\u3066\u3044\u308b\u6b63\u5e38\u306aURL\u3092\u512a\u5148\u3059\u308b\u304b\u3089\u3001\u3053\u308c\u306f\u554f\u984c\u306b\u306f\u306a\u3089\u306a\u3044\u3060\u308d\u3046\u3002\u6b63\u5e38\u306aURL\u3092\u4f9d\u7136\u3068\u3057\u3066\u666e\u901a\u306b\u30af\u30ed\u30fc\u30eb\u3059\u308b\u3060\u308d\u3046\u3057\u305d\u308c\u3068\u306f\u5225\u306b\u3001\u305d\u3046\u3044\u3063\u305f\u4f59\u5206\u306aURL\u3092\u306a\u3093\u3068\u304b\u3057\u3066\u51e6\u7406\u3059\u308b\u3060\u308d\u3046\u3002<\/p>\n<p>\u4e07\u304c\u4e00\u3001\u3044\u304f\u3064\u304b\u306e\u6b63\u5e38\u306aURL\u306e\u30af\u30ed\u30fc\u30eb\u983b\u5ea6\u304c\u307b\u3093\u306e\u5c11\u3057\u843d\u3061\u308b\u3053\u3068\u304c\u3042\u3063\u305f\u3068\u3057\u3066\u3082\u901a\u5e38\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u30e9\u30f3\u30ad\u30f3\u30b0\u306b\u306f\u5f71\u97ff\u3057\u306a\u3044\u3002<\/p>\n<\/blockquote>\n<p class=\"p40-t\">\u300c\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u30c4\u30fc\u30eb\u306b404\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3044\u3066\u306a\u304b\u306a\u304b\u6d88\u3048\u306a\u304f\u3066\u3069\u3046\u3057\u305f\u3089\u3044\u3044\u306e\u304b\uff1f\u300d\u3068\u3044\u3046\u8cea\u554f\u306f\u65e5\u672c\u306e\u30d8\u30eb\u30d7\u30d5\u30a9\u30fc\u30e9\u30e0\u3067\u3082\u305f\u3073\u305f\u3073\u6295\u7a3f\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u81ea\u5206\u3067\u524a\u9664\u3057\u305f\u3053\u3068\u3092\u304d\u3061\u3093\u3068\u8a8d\u8b58\u3057\u3066\u3044\u3066\u3044\u305f\u308a\u81ea\u5206\u304c\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u5916\u90e8\u30b5\u30a4\u30c8\u304b\u3089\u5f35\u3089\u308c\u305f\u308a\u3057\u3066\u3044\u308bURL\u306b\u5bfe\u3057\u3066\u30af\u30ed\u30fc\u30eb\u30a8\u30e9\u30fc\u3092\u8d77\u3053\u3057\u3066\u3044\u308b\u306e\u3067\u3042\u308c\u3070\u7121\u8996\u3057\u3066\u69cb\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>Googlebot\u306f\u3001404\u3084410\u306eHTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u8fd4\u3059URL\u3067\u3042\u3063\u3066\u3082\u534a\u6c38\u4e45\u7684\u306b\u30af\u30ed\u30fc\u30eb\u3057\u7d9a\u3051\u307e\u3059\u3002<br \/>\n\u5fa9\u6d3b\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3068\u304d\u304a\u308a\u78ba\u8a8d\u3057\u306b\u3084\u3063\u3066\u304f\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u983b\u5ea6\u306f\u6b21\u7b2c\u306b\u4e0b\u304c\u3063\u3066\u304f\u308b\u3067\u3057\u3087\u3046\u304c\u305d\u308c\u3067\u3082\u30af\u30ed\u30fc\u30eb\u3092\u3084\u3081\u307e\u305b\u3093\uff08\u300c<a href=\"\/\/www.suzukikenichi.com\/blog\/google-is-now-treating-410s-slightly-differently-than-404s\/\">\u524a\u9664\u300d\u3092\u610f\u5473\u3059\u308b410\u306f\u300c\u898b\u3064\u304b\u3089\u306a\u3044\u300d\u3092\u610f\u5473\u3059\u308b404\u3088\u308a\u3082\u591a\u5c11\u306f\u983b\u5ea6\u304c\u4e0b\u304c\u308b<\/a>\u3088\u3046\u3060\u3051\u3069\u305d\u308c\u3067\u3082\u5b8c\u5168\u306b\u30af\u30ed\u30fc\u30eb\u3092\u30b9\u30c8\u30c3\u30d7\u3057\u306a\u3044\uff09\u3002<\/p>\n<p class=\"p40-t\">\u30da\u30fc\u30b8\u3084\u30b5\u30a4\u30c8\u304c\u306a\u304f\u306a\u3063\u305f\u3001URL\u304c\u5909\u308f\u3063\u305f\u306e\u3088\u3046\u306b\u305d\u308c\u307e\u3067\u5b58\u5728\u3057\u3066\u3044\u305f\u30da\u30fc\u30b8\u304c\u306a\u304f\u306a\u3063\u3066\u30ea\u30f3\u30af\u5207\u308c\u304c\u767a\u751f\u3059\u308b\u306e\u3053\u3068\u306f\u30a6\u30a7\u30d6\u3067\u306f\u3054\u304f\u3054\u304f\u5f53\u305f\u308a\u524d\u306b\u8d77\u3053\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306fGoogle\u3082\u5341\u5206\u627f\u77e5\u3057\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u51fa\u308b\u539f\u56e0\u304c\u5206\u304b\u3063\u3066\u3044\u3066\u304b\u3064\u305d\u308c\u304c\u59a5\u5f53\u306a\u7406\u7531\u306b\u3088\u308b\u3082\u306e\u3067\u4fee\u6b63\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u306e\u3067\u3042\u308c\u3070\u3001404\u30a8\u30e9\u30fc\u306f\u305d\u306e\u307e\u307e\u306b\u3057\u3066\u304a\u3044\u3066\u5927\u4e08\u592b\u3067\u3059\u3002<\/p>\n<p>\u30b5\u30a4\u30c8\u306b\u60aa\u3044\u5f71\u97ff\u304c\u51fa\u3066Google\u306e\u8a55\u4fa1\u304c\u4e0b\u304c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u6b63\u5e38\u306aURL\u306b\u5bfe\u3059\u308b\u30af\u30ed\u30fc\u30eb\u983b\u5ea6\u306b\u306f\u652f\u969c\u304c\u51fa\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3068\u50d5\u306f\u601d\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u305d\u308c\u3082\u5fc3\u914d\u3044\u3089\u306a\u3044\u3088\u3046\u3067\u3059\u306d\u3002<br \/>\n\u307e\u3057\u3066\u30da\u30ca\u30eb\u30c6\u30a3\u3092\u53d7\u3051\u308b\u306a\u3093\u3066\u7d76\u5bfe\u306b\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p class=\"p40-t\">\u3082\u3063\u3068\u3082URL\u306e\u8a18\u8ff0\u30df\u30b9\u3067\u5185\u90e8\u30ea\u30f3\u30af\u304c\u30ea\u30f3\u30af\u5207\u308c\u3092\u8d77\u3053\u3057\u3066\u3044\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u4e0d\u89aa\u5207\u306a\u306e\u3067\u3059\u3050\u306b\u4fee\u6b63\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u307e\u305f\u30e6\u30fc\u30b6\u30fc\u304c\u6238\u60d1\u308f\u306a\u3044\u3088\u3046\u306b<a href=\"\/\/www.suzukikenichi.com\/blog\/panda-update-may-look-at-404-error-pages\/\">\u30ab\u30b9\u30bf\u30e0404\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u3092\u6e96\u5099\u3057\u3066\u304a\u304f<\/a>\u3053\u3068\u3082\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u9ad8\u3081\u308b\u3053\u3068\u306b\u7e4b\u304c\u308a\u307e\u3059\u306d\u3002\n<\/p>\n<p>\u9593\u9055\u3063\u3066\u3082<a href=\"\/\/www.suzukikenichi.com\/blog\/you-should-not-301-redirect-all-non-existed-pages-to-home-page\/\">\u5b58\u5728\u3057\u306a\u3044\u30da\u30fc\u30b8\u3092\u30c8\u30c3\u30d7\u30da\u30fc\u30b8\u306b301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8<\/a>\u3057\u305f\u308a<a href=\"\/\/www.suzukikenichi.com\/blog\/google-webmaster-tools-show-soft-404\/\">\u30bd\u30d5\u30c8404<\/a>\u3092\u8fd4\u3057\u305f\u308a\u3057\u306a\u3044\u3088\u3046\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u307e\u305f\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u30c4\u30fc\u30eb\u304b\u3089\u30a8\u30e9\u30fc\u30ec\u30dd\u30fc\u30c8\u3092\u6d88\u305d\u3046\u3068\u3057\u3066URL\u524a\u9664\u30c4\u30fc\u30eb\u3092\u4f7f\u3046\u306e\u3082<a href=\"\/\/www.suzukikenichi.com\/blog\/when-not-to-use-url-removal-tool\/\">\u9593\u9055\u3063\u305f\u4f7f\u7528\u65b9\u6cd5<\/a>\u3067\u3059\u3002<\/p>\n<p>\u3053\u3061\u3089\u306e\u516c\u5f0f\u30d6\u30ed\u30b0\u306e\u8a18\u4e8b\u3082\u8aad\u3093\u3067\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li><a href=\"http:\/\/googlewebmastercentral-ja.blogspot.jp\/2011\/07\/404.html\">Google \u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u5411\u3051\u516c\u5f0f\u30d6\u30ed\u30b0: 404 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