Iguana - 1:06 pm on Nov 18, 2005 (gmt 0)
Interesting that no one has yet connected the 'limited updates' / 'filters' that have been applied since Aug 16 last year roughly every two months. These have knocked out long established sites, reducing just about every page from #1 to #100 in the SERPS. A few months later some sites return back to #1. Very similar effect to the 'sandbox' and supporting the idea that it is an algo feature that just happens to affect new sites more than established sites.