{"id":5120,"date":"2009-07-16T05:55:59","date_gmt":"2009-07-15T20:55:59","guid":{"rendered":"http:\/\/www.suzukikenichi.com\/blog\/?p=5120"},"modified":"2009-07-17T05:13:18","modified_gmt":"2009-07-16T20:13:18","slug":"yo-yo-effect-may-be-caused-by-backlink-profile-and-trust","status":"publish","type":"post","link":"https:\/\/www.suzukikenichi.com\/blog\/yo-yo-effect-may-be-caused-by-backlink-profile-and-trust\/","title":{"rendered":"Google \u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u306f\u3001\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u3068\u30c8\u30e9\u30b9\u30c8\u304c\u539f\u56e0\u304b\uff1f"},"content":{"rendered":"

\u5148\u9031\u3001\u300cGoogle\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61<\/a>\u300d\u306b\u3064\u3044\u3066\u6295\u7a3f\u3057\u305f\u3068\u3053\u308d\u3001\u300c\u540c\u3058\u3088\u3046\u306a\u73fe\u8c61\u3092\u4f53\u9a13\u3057\u3066\u3044\u307e\u3059\u300d\u3068\u3044\u3046\u8a71\u3092\u30b3\u30e1\u30f3\u30c8\u3001\u30e1\u30fc\u30eb\u3001\u3042\u308b\u3044\u306f\u76f4\u63a5\u3001\u6570\u4eba\u304b\u3089\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002<\/p>\n

\u65e5\u672c\u3067\u3082\u3001\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u306b\u8a72\u5f53\u3059\u308b\u3088\u3046\u306a\u72b6\u6cc1\u306b\u3042\u308b\u30b5\u30a4\u30c8\u304c\u5b58\u5728\u3059\u308b\u3088\u3046\u3067\u3059\u306d\u3002
\nSphinn Japan Blog\u306e\u3053\u306e\u8a18\u4e8b<\/a>\u3082\u3001\u30da\u30ca\u30eb\u30c6\u30a3\u3067\u306f\u306a\u304f\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u306a\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u7591\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u307e\u305f\u3001\u30a4\u30f3\u30d5\u30a9\u30ad\u30e5\u30fc\u30d3\u30c3\u30af\u3055\u3093\u306eSEO\u30d6\u30ed\u30b0<\/a>\u3067\u306f\u3001\u50d5\u306e\u8a18\u4e8b\u3092\u5f15\u304d\u5408\u3044\u306b\u51fa\u3057\u3066\u3044\u305f\u3060\u304d\u3064\u3064\u3001\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u3068\u304a\u307c\u3057\u304d\u72b6\u6cc1\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\uff08\u4f59\u8ac7\u3067\u3059\u304c\u3001\u30a4\u30f3\u30d5\u30a9\u30ad\u30e5\u30fc\u30d3\u30c3\u30af\u3055\u3093\u306f\u3001\u8a9e\u3089\u308c\u308b\u3053\u3068\u306e\u5c11\u306a\u3044Yahoo!\u306eSEO\u60c5\u5831\u3092\u6c17\u524d\u3088\u304f\u767a\u4fe1\u3057\u3066\u3044\u307e\u3059\uff09\u3002<\/p>\n

\u30a4\u30f3\u30d5\u30a9\u30ad\u30e5\u30fc\u30d3\u30c3\u30af\u3055\u3093\u304cYahoo!\u306b\u5f37\u3044\u3053\u3068\u306f\u5341\u5206\u306b\u8a8d\u8b58\u3057\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001Google\u306b\u5bfe\u3057\u3066\u3082\u540c\u3058\u3053\u3068\u304c\u8a00\u3048\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n

\u30a4\u30f3\u30d5\u30a9\u30ad\u30e5\u30fc\u30d3\u30c3\u30af\u3055\u3093\u306f\u3001\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u306e\u539f\u56e0\u3068\u3057\u3066\u300c\u30d0\u30c3\u30af\u30ea\u30f3\u30af<\/span>\u300d\u3068\u300c\u7af6\u4e89\u7387\u306e\u9ad8\u3044\u30d3\u30c3\u30af\u30ef\u30fc\u30c9<\/span>\u300d\u3092\u6319\u3052\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5b9f\u306f\u3053\u308c\u306f\u3001\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u306e\u30c7\u30a3\u30b9\u30ab\u30c3\u30b7\u30e7\u30f3\u304c\u884c\u308f\u308c\u305fWebmasterWorld<\/a>\u3067\u3001\u30a2\u30c9\u30df\u30cb\u30b9\u30c8\u30ec\u30fc\u30bf\u306etedster\u304c\u8a00\u3063\u3066\u3044\u308b\u3053\u3068\u306b\u5408\u81f4\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n

I agree that the backlink profile is critical almost all of the time. But what, exactly, you do about that profile may vary in each case. The key is in knowing your site and your backlinks very well – it takes solid analysis and clear thinking. In some cases, just one or two backlinks from a strong authority website can make all the difference. In other cases, I’ve seen such new backlinks actually throw the url into a yo-yo, often because the conscious manipulation was too obvious and heavy-handed. A light touch can go a long way,<\/p><\/blockquote>\n

\u4e0b\u306e\u5f15\u7528\u306f\u3001Google\u306eSERP\u306e\u6708\u3054\u3068\u306e\u5909\u5316\u306b\u3064\u3044\u3066\u610f\u898b\u3092\u4ea4\u3057\u5408\u3046\u5225\u306e\u30b9\u30ec\u30c3\u30c9<\/a>\u3067\u306e\u3001tedster\u306e\u30b3\u30e1\u30f3\u30c8\u3067\u3059\u3002<\/p>\n

I don’t know if trust is a direct factor in the yo-yo or not, but I re-framed the question that way because it seemed a better focus.<\/p>\n

What is trust – in Google terms? That’s a thread on its own, or several threads.<\/p>\n

Put simply, my understanding is that trust calculation begins with a hand-picked group of seed sites — and it then measures the link distance from those seed sites. If a new set of seed sites gets chosen, then the trust of any linked domains can shift. And if a site is removed from the seed set, then trust may fall away from those sites it links to, with further repurcussions for the second- and third-generation sites in the overall web graph.<\/p>\n

It does seem to me that a yo-yo ranking (especially on and off the first page) could be a way of saying “we are not sure whether to trust this url for this keyword”. So it gets shown just some of the time until the data makes things clear.<\/p>\n

Now just because that makes sense to me in an abstract way does not mean that Google is really doing this, but the idea does have a kind of logic. Deep changes in content might upset a trust value. Suddenly getting impressions for a search term where a site never ranked before also might raise questions about why that happened.<\/p><\/blockquote>\n

\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u306b\u306f\u3055\u307e\u3056\u307e\u306a\u539f\u56e0\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u304c\u3001\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u306b\u304a\u3044\u3066\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u306e\u72b6\u6cc1\u304c\u95a2\u4e0e\u3057\u3066\u3044\u308b<\/span>\u306e\u306f\u9593\u9055\u3044\u306a\u3044\u3068\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n

\u5f37\u3044\u30aa\u30fc\u30bd\u30ea\u30c6\u30a3\u30b5\u30a4\u30c8\u304b\u3089\u306e\u307b\u3093\u306e\uff11\uff0c\uff12\u672c\u306e\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u3067\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u304b\u3089\u8131\u3059\u308b\u3053\u3068\u3082\u3042\u308b\u3057\u3001\u9006\u306b\u3042\u304d\u3089\u304b\u306b\u81ea\u4f5c\u81ea\u6f14\u306e\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u304c\u5f35\u3089\u308c\u308b\u3053\u3068\u3067\u30e8\u30fc\u30e8\u30fc\u73fe\u8c61\u306b\u9665\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u300c\u5f37\u3044\u30aa\u30fc\u30bd\u30ea\u30c6\u30a3\u30b5\u30a4\u30c8\u300d\u3068\u306f\u3069\u3093\u306a\u30b5\u30a4\u30c8\u304b\u3068\u3044\u3046\u3068\u3001tedster\u306f\u30c8\u30e9\u30b9\u30c8\uff08\u4fe1\u7528\u5ea6\uff09\u306e\u9ad8\u3044\u30b5\u30a4\u30c8\u3068\u7406\u89e3\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n

Google\u306e\u7279\u8a31\u3092\u8aad\u3080\u3068\u3001\u300c\u30aa\u30fc\u30bd\u30ea\u30c6\u30a3\u300d\u3068\u300c\u30c8\u30e9\u30b9\u30c8\u300d<\/a>\u306f\u9055\u3046\u3068\u4ee5\u524d\u306b\u89e3\u8aac\u3057\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u30aa\u30fc\u30bd\u30ea\u30c6\u30a3\u306f\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001\u30ea\u30f3\u30af\u3092\u591a\u304f\u96c6\u3081\u308b\u3053\u3068\u3067\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\n\u300c\u30d0\u30c3\u30af\u30ea\u30f3\u30af\u306e\u591a\u3044\u30b5\u30a4\u30c8\u300d\uff1d\u300c\u30aa\u30fc\u30bd\u30ea\u30c6\u30a3\u306e\u9ad8\u3044\u30b5\u30a4\u30c8\u300d\u3067\u3059\u306d\u3002<\/p>\n

\u3053\u308c\u306b\u5bfe\u3057\u3066\u3001\u30c8\u30e9\u30b9\u30c8\u306f\u7279\u5b9a\u306e\u30b5\u30a4\u30c8\u306b\u4e0e\u3048\u3089\u308c\u308b\u300cSeed\uff08\u30b7\u30fc\u30c9\uff09<\/span>\u300d\u3068\u547c\u3070\u308c\u308b\u30dd\u30a4\u30f3\u30c8\uff0f\u30b9\u30b3\u30a2\u306e\u53d7\u3051\u6e21\u3057\u306b\u3088\u3063\u3066\u5224\u65ad\u3055\u308c\u307e\u3059\u3002<\/p>\n

Google\u306f\u3001\u300c\u3053\u306e\u30b5\u30a4\u30c8\u306f\u4fe1\u7528\u5ea6\uff08\u30c8\u30e9\u30b9\u30c8\uff09\u304c\u3042\u308b\u300d\u3068\u3057\u3066\uff11\u6b21\u30ec\u30d9\u30eb\u306e\u30b5\u30a4\u30c8\u3092\uff08\u304a\u305d\u3089\u304f\u624b\u52d5\u3067\uff09\u9078\u3073\u307e\u3059\u3002<\/p>\n

\uff11\u6b21\u30ec\u30d9\u30eb\u306e\u30c8\u30e9\u30b9\u30c8\u30b5\u30a4\u30c8\u306b\u306f\u3001\u4fe1\u7528\u3092\u4e0e\u3048\u3089\u308c\u305f\u8a3c\u660e\u3068\u3057\u3066Seed\u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n

\uff11\u6b21\u30ec\u30d9\u30eb\u306e\u30c8\u30e9\u30b9\u30c8\u30b5\u30a4\u30c8\u304b\u3089\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b\u30b5\u30a4\u30c8\u306b\u306f\u3001Seed\u304c\u6e21\u3055\u308c\u307e\u3059\u3002
\n\u305f\u3060\u3057\u3001\u5c11\u3057\u30dd\u30a4\u30f3\u30c8\u306f\u6e1b\u308a\u307e\u3059\u3002
\n\uff12\u6b21\u30ec\u30d9\u30eb\u306e\u30b5\u30a4\u30c8\u306b\u306f\u5168\u30dd\u30a4\u30f3\u30c8\u3067\u306f\u306a\u304f\u3001\u4e00\u90e8\u3060\u3051\u304c\u5f15\u304d\u7d99\u304c\u308c\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n

\uff12\u6b21\u30ec\u30d9\u30eb\u306e\u30c8\u30e9\u30b9\u30c8\u30b5\u30a4\u30c8\u304b\u3089\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b\u30b5\u30a4\u30c8\u306b\u306f\u3001\uff13\u6b21\u30ec\u30d9\u30eb\u306e\u30c8\u30e9\u30b9\u30c8\u30b5\u30a4\u30c8\u3068\u3057\u3066\u3001Seed\u304c\u6e21\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u3053\u3053\u3067\u3082\u3001Seed\u306f\u6e1b\u5c11\u3057\u307e\u3059\u3002<\/p>\n

Seed\u306e\u53d7\u3051\u6e21\u3057\u306e\u6e1b\u5c11\u306f\u3001\u4eba\u9593\u306e\u4e16\u754c\u306e\u5bb6\u7cfb\u3067\u3044\u3046\u3068\u3001\u4e16\u4ee3\u304c\u79fb\u308b\u306b\u9023\u308c\u3066\u8840\u304c\u8584\u304f\u306a\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n

Seed\u304c\u76f4\u63a5\u4e0e\u3048\u3089\u308c\u305f\u30b5\u30a4\u30c8\u306f\u4fe1\u7528\u5ea6\u304c\u3082\u3063\u3068\u3082\u9ad8\u304f\u3001Seed\u304c\u4e0e\u3048\u3089\u308c\u305f\u30b5\u30a4\u30c8\u304c\u30ea\u30f3\u30af\u3057\u3066\u3044\u308b\u30b5\u30a4\u30c8\u306f\uff12\u756a\u76ee\u306b\u4fe1\u7528\u5ea6\u304c\u9ad8\u304f\u306a\u308a\u3001\uff12\u6b21\u30ec\u30d9\u30eb\u306e\u30b5\u30a4\u30c8\u304c\u30ea\u30f3\u30af\u3057\u3066\u3044\u308b\u30b5\u30a4\u30c8\u304c\uff13\u756a\u76ee\u306b\u4fe1\u7528\u5ea6\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u3064\u307e\u308a\u3001Seed\u304c\u76f4\u63a5\u4e0e\u3048\u3089\u308c\u305f\u30b5\u30a4\u30c8\u304b\u3089\u3001\u30ea\u30f3\u30af\u3092\u7d4c\u305f\u8ddd\u96e2\u304c\u96e2\u308c\u308c\u3070\u96e2\u308c\u308b\u307b\u3069\u30c8\u30e9\u30b9\u30c8\u306f\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n

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