indyank - 6:15 am on Feb 26, 2011 (gmt 0) [edited by: indyank at 6:59 am (utc) on Feb 26, 2011]
Add this to your list as the 10th one.
10) Many of those blogs/sites that lost traffic weren't much affected by algo changes, until this one.Infact, many of them have another common pattern as well.They all saw an increase in traffic, just before this happened.
Do you remember me replying to Tedster about noticing an increase in traffc to the extent of 20%, during the timeframe that he saw traffic to one of his clients double?
I didn't notice Tedster's reply, if any, on that but this particular site I was talking about has been impacted. It is also notable that it saw traffic like never before, on the same days that a few others including Dickbaker had noticed on their sites.
So, what do you think is the major factor? The spam reporting tool?
I am surprised that googlers of the caliber of Amit and Matt using the data they received through the tool to "cross-validate their algo tweaks".They did mention in their blog post of not using it to demote sites, but the data that they have is not even genuine end users' data.It is hardly few days since this tool has been released and do they think that normal searchers would have downloaded them to report spam? Whatever downloads they would have seen and the reports they would have received are certainly from SEO/webmasters who know about it and there is obviously going to be a huge bias in these reports.We have already seen to what extent SEO companies fight it out these days.
Other than the above, here is what I think UGC (User Generated Content) is.
To me, it is not just forum or blog comments but also content in wikipedia, eHow and the likes.But I know where Tedster is coming from on this. It is the links from UGC of the type he has defined.
There are also two important observations from Robert Charlton (on the adsense farms thread) and Ismailman on this thread, which are in my notes and these are good angles to ponder.
[edited by: indyank at 6:59 am (utc) on Feb 26, 2011]