Finally I'm making some traction figuring out this Penguin shit. My clients took such a hard hit, I've been unable to do hardly ANY of my own affiliate marketing, and it's pissing me off... So I decided to take matters into my own hands and used Keyword Canine and dissect each of my clients backlink profiles, looking for patterns. Pattern #1: Just as the MicroSite Masters blog post mentioned, clients with 2 full URL variations in their top 5 anchors were not affected as badly. Pattern #2: Clients with a close ratio of D0FOLL0W to NOFOLLOW were not affected as bad as clients with majority D0FOLL0W links. Pattern #3: Clients with indexed pages on Angie's List and BBB appear to be near invincible. I have 1 client with only ~20% Full URL anchors, but his Angie and BBB page have the Full URL, PR, and are indexed. Oddly enough, he's the ONLY one that still ranks #1, and all the competitors were destroyed by Penguin. Experiment: My first test was to change Anchor links on my blog network to Full URL instead of keywords. I started with PR2-3 blogs, being very careful with the anchors. I used Keyword Canine to give me an idea of which "style" of Full URL variation I should be using. Results: In 24 hours, with NO ADDITIONAL links built, here is the graph from one client: panel.micrositemasters.com/reports/8ead4ee28b085aa8b6612503ano3s9s.html O_O....? Duh...? Penguin is running a background filter just like Panda, if that wasn't obvious already. I have now changed anchors for several clients, and in addition launched a 30 day UD Wiki blast to account for the lack of NOFOLLOW links and anchor diversity. I will post updated results here over the next few weeks.