i have made some experiments on some of my sites in the past few months. Bought some web 2.0 properties service or called link wheel and also link push and some other "randomization" of web 2.0 properties services here on BHW. It seems after few weeks my sites always went up in their rankings but then few weeks later after that they got penalized because I can see my ranks always went down frop top 10 or 20 to rank 400th or 500th even. (and they never got their ranks back, so far at least, except one site which I will tell below) I really want to know if they are actually penalization or just some kind of "sandbox" because of the link push/link wheel? I have one site which also got penalized back in october/november but now it's back to top 20 of its original ranks...However, the rankings aren't better (actually worse) than before it got penalized. Don't ask me for the rest of the sites because they are still ranked 400th-500th... However, for the sites I don't do any link wheel/link push campaign I never get such penalization thing even when I do SB and xrumer...what do you think I should do guys?