rango - 11:38 am on Aug 20, 2012 (gmt 0)

"I'm thinking they might look at your ratio of nofollow/dofollow links as normal websites don't have more than 5-10% nofollow, while aggressive SEOs tend to have 10%+. "

Geez, I hope not. We have a pretty high ratio of no-follow links and only because we comment fairly regularly on blogs and so forth just as a way to build awareness. With the understanding that Google didn't follow those links in the first place, it's none of their damn business to now start penalizing for having them!