Dan01 - 11:13 pm on Apr 16, 2011 (gmt 0)
It's not really a new thing, but it's gotten more strict.
Maybe. I have read for years that it hurt your SEO to link to low quality sites. But we kept seeing the content farms rank high. Why? Because it was not a site-wide ding.
Maybe other factors that don't fit the mold (as per our perception of Panda), may play a bigger role than before.
PRNewswire doesn't have any advertisements. None. So why did they get dinged? Maybe they got a sitewide ding because of duplicate content?