As far as T1 goes, I'm sure high PR stuff is still some of the best. But, is it good to have Web 2.0's with relative content linking to your money site even if they have no PR at all? Also, is T2 a good level to send social signals and low PR links to those Web 2.0's? Or is it better to send the signals to your money site and send links to your W2.0's? One last thing. How high of quality links is required to link to T1 sites? Should you save the spam links for T3 links into T2? Some of these may seem like rhetorical questions, but I'm more or less reassuring myself on the answers lol.