There seems to be a growing number of webmasters who run Digital Point's Coop on their site seeing heavy penalities placed on their sites' SERPs in Google. Is it a coincindence, related to recent Google heaves or is it a definite Coop based penalty? The waters seem muddy at present (come back Matt...) and many are sceptical that it's a penalty aimed at Coop users.
Personally I've lost 4 sites over the last 48 hours, the only thing they have in common is they run Coop ads. 2 that were there last night aren't today. They're not scrapers, there's no cloaking or keyword stuffing and the content is all original - just like Google likes. None the less they don't appear for themselves where they were once #1.
That's the last time I run unrelated site links from my pages. Unless of course, they're AdSense ones... ;)