crobb305 - 6:09 pm on Apr 11, 2011 (gmt 0) [edited by: crobb305 at 6:15 pm (utc) on Apr 11, 2011]
@crobb305 I think you are wrong when you compare US and non-US Google. The reason is simple: the impact in non-US is less strong because there are less sites to replace low quality sites there.
That is simply false. Globally, there are the same number of webpages to rank irrespective of which country you're sitting in. I just ran a search for my main phrase in the U.S.=23,700,000 results...On Google.es =23,700,000 So my theory still stands. There are equal numbers of results showing in both countries, and thus there are equal fractions of "low quality sites" to rank.
On Panda in Spain, my site still ranks very well, unlike here in the U.S. (equal number of results returned). I shared my theory above. Whether it sticks remains to be seen.
[edited by: crobb305 at 6:15 pm (utc) on Apr 11, 2011]