indyank - 12:43 pm on Mar 22, 2011 (gmt 0)
This is what i feel about panda.Big sites do rank high and get traffic for most pages on their site while smaller sites usually have a lot of pages that don't really get any traffic.
Let us assume that google applies the percentage of low traffic pages (not necessarily low quality) to the overall number of pages in the site, as a weight while ranking any of the pages on the site, then smaller sites do get affected.This is also the case with the real spam.Not all pages on their site receive good ranking and traffic.They usually tend to have one or two pages that float to the top.
By applying this weight, it is easy for google to push them down.But what google finds difficult to handle right now are those spam sites that just have few pages ( 1 to 10) but do succeed in ranking most of them higher, thereby getting traffic.
But this logic will definitely work negatively against several genuine sites too and that is what seem to be happening right now.
Why you do see ehow or cnet or softonic or other top content sites rising up dramatically, might be because of this ratio.They seem to have a lot of successful pages on their sites as compared to ezinearticles and others.