討論：這兩天的針對backlink spam的Google Update影響3%+的Queries

據說是一次major update，主要是打擊blackhatbacklink，我看到很多關鍵詞都有了很大的變化，但是有高質量外鏈的站還是穩如泰山。
# B" C9 f9 {4 i, e% G0 D
我看到的幾個niche關鍵詞排名中，wikihow，yahoo，about或者其他一些大站的內頁重回榜首。
+ B' |, x' y% `% A
' D  N8 h3 z2 ^+ `  t2 g5 M# L" @2 [我個人的幾個站被嚴重降權，應該就是外鏈有點black的緣故。 兄弟們的情況如何啊？

下面是Matt Cutts /April 24的文章：
4 E) Z. B+ t, B  Y
Google has said before that search engine optimization, or SEO, can be positive and constructive—and we're not the only ones. Effective search engine optimization can make a site more crawlable and make individual pages more accessible and easier to find. Search engine optimization includes things as simple as keyword research to ensure that the right words are on the page, not just industry jargon that normal people will never type.
; J& C1 n3 k- f; k
0 [" x8 X9 f1 q" B  m5 S「White hat」 search engine optimizers often improve the usability of a site, help create great content, or make sites faster, which is good for both users and search engines. Good search engine optimization can also mean good marketing: thinking about creative ways to make a site more compelling, which can help with search engines as well as social media. The net result of making a great site is often greater awareness of that site on the web, which can translate into more people linking to or visiting a site.
& S6 p9 n4 @5 d: j# z& U
The opposite of 「white hat」 SEO is something called 「black hat webspam」 (we say 「webspam」 to distinguish it from email spam). In the pursuit of higher rankings or traffic, a few sites use techniques that don』t benefit users, where the intent is to look for shortcuts or loopholes that would rank pages higher than they deserve to be to be ranked. We see all sorts of webspam techniques every day, from keyword stuffing to link schemes that attempt to propel sites higher in rankings.

The goal of many of our ranking changes is to help searchers find sites that provide a great user experience and fulfill their information needs. We also want the 「good guys」 making great sites for users, not just algorithms, to see their effort rewarded. To that end we』ve launched Panda changes that successfully returned higher-quality sites in search results. And earlier this year we launched a page layout algorithm that reduces rankings for sites that don』t make much content available 「above the fold.」
7 ]$ D: M  v  q
0 Q, i0 I( p3 ~! n) a5 CIn the next few days, we』re launching an important algorithm change targeted at webspam. The change will decrease rankings for sites that we believe are violating Google』s existing quality guidelines. We』ve always targeted webspam in our rankings, and this algorithm represents another improvement in our efforts to reduce webspam and promote high quality content. While we can't divulge specific signals because we don't want to give people a way to game our search results and worsen the experience for users, our advice for webmasters is to focus on creating high quality sites that create a good user experience and employ white hat SEO methods instead of engaging in aggressive webspam tactics.

Here』s an example of a webspam tactic like keyword stuffing taken from a site that will be affected by this change:


Of course, most sites affected by this change aren』t so blatant. Here』s an example of a site with unusual linking patterns that is also affected by this change. Notice that if you try to read the text aloud you』ll discover that the outgoing links are completely unrelated to the actual content, and in fact the page text has been 「spun」 beyond recognition:


Sites affected by this change might not be easily recognizable as spamming without deep analysis or expertise, but the common thread is that these sites are doing much more than white hat SEO; we believe they are engaging in webspam tactics to manipulate search engine rankings.

2 W3 c( D. Q& y2 S0 a" V$ ?The change will go live for all languages at the same time. For context, the initial Panda change affected about 12% of queries to a significant degree; this algorithm affects about 3.1% of queries in English to a degree that a regular user might notice. The change affects roughly 3% of queries in languages such as German, Chinese, and Arabic, but the impact is higher in more heavily-spammed languages. For example, 5% of Polish queries change to a degree that a regular user might notice.
8 v' G: U0 F" z. n4 P* |" W3 ]
We want people doing white hat search engine optimization (or even no search engine optimization at all) to be free to focus on creating amazing, compelling web sites. As always, we』ll keep our ears open for feedback on ways to iterate and improve our ranking algorithms toward that goal.
/ o6 `3 O  R  \9 N0 [. h
Posted by Matt Cutts, Distinguished Engineer

很多小的權威站都受影響，排名減低或者排名直接消失。。。
這次算法改變影響範圍太大了

我有一個低競爭的排名不錯的網站根本就沒有做過外鏈，也TMD的打擊了

所有的關鍵詞排名不見了。

還好，沒被打擊！！
& @. n% m( r) Y- {% _+ U1 ^
. {: M% F8 A) y: C/ D因為本來就是個位數

還有就是看到，一些關鍵詞第一頁出現了FB page 和 Tw頁面。
2 E1 k- ]  u2 q
小站真是更難做了，外鏈怎麼做也要換個思路了。

嘿嘿
/ u: H5 b+ E* p- R7 z以前的外鏈您是怎麼做的啊

* b* o/ W& u) ]) b5 S, s- H9 m) c0 T7 V
+ M4 J1 s' T- D" S! F的確-是個大洗牌~~~~~~~~~~~

我一個EMD的MNS站，兩年了，沒做外鏈，一直排名前五，今天也消失了

原來這樣，我的新站排第10位，就呆了兩天後排名直接找不到了，現在不知道究竟是被沙盒了，還是由於這次變動。註：大約4月17號的時候排名降沒了。