Planet13 - 2:48 pm on Jun 15, 2011 (gmt 0)
Ever wondered if your site has a, let's not call it a penalty because the squad gets activated :), but a score that drags it down? Until that's removed, 'nothing works.'
That's certainly a possibility. My suspicion - based entirely on what I have read from other link builders - is that google might place a "link juice governor" on some sites, meaning that for an extended period of time, any new Page Rank from link building efforts is nullified.
So it is less than an Over Optimization Penalty (the dreaded -50 or -950). It might NOT even BE a penalty, but just a part of the algorithm, so sending a re inclusion request wouldn't help.
I suspect the algo has a velocity filter on the accumulation of inbound links/page rank and only allows so much page rank to accumulate within a certain time frame. Go over that amount, and it is not counted toward your total "score." Go WAY over that amount, and you induce a penalty.