I woke up this morning and checked on some rankings to find that 2 of my sites that were completely destroyed by p2.1 were now back. Given they weren't back at their original rankings, but just a few spots lower. The only thing I did with these sites after they were hit was getting them off a blog network and adding content. Feels good! Each site had about 250 blog network links. I'm not exactly sure what google did, but it makes sense that they would de-index it fast because I'm guessing that since the SERP's are still scrambling constantly that the algo is still sniffing around. I do plan on getting back into the blog networks after the update completely settles, as these sites are semi-churn and burn and there's no time to waste. Some more info on the sites: Niche: Both in Financial niche. Age: one just turned a year old, the other is 3 years old. Backlink profiles: 40% raw URL, 30% main keyword, 20% brand name, 10% generic. Link types: Almost all the links are web 2.0's, both highly spun and original articles, a ton of social buzz from twitter, 250 blog network links, press releases. Content: A LOT. I'm talking hundreds of unique articles on each one. The reason for this is that these sites has been up and doing well for the years that they've been online. They also kind of need updated content to make sure the users are happy.