One of the places I browse often for SEO wisdom and trends is SearchEngineLand. Here’s a good article they recommended: 33 Ways to Get Penalized By Google. Nothing earth-shattering there, but a good reminder of core best practices.
In other news, Fluff points out that Hubpages is back on Quantcast, and shows a slight uptick from the July 23 Panda 2.2 update. Way to go, HP! I don’t expect it ever to regain the hyper-inflated numbers it had before– I honestly do not believe its quality/spam ratio is more than double Squidoo’s– but I expect it to be fairly comparable.