learnseo81 - 2:26 pm on May 16, 2011 (gmt 0)
I believe there are no penalties like -50, -60. I'm not saying you are wrong. There are several google filters but I believe I didn't trip any of those filters.
I'm not targeting anchor texts but getting links from lots of variations. I don't monetize the sites with adsense at all! In fact, none of my sites have adsense so that can't be the reason.
If backlinks will hurt a site, It will be very easy to sabotage your competitors. Backlinks can either help you or can't help you at all, that's it! Backlinks will do harm doesn't sound good.
Now If you get thousands of backlinks in a very short period of time, that's will trigger some sort of google filter and you may remain filtered for quite some while. It is VERY easy for google to detect anchor text patterns and If you domain doesn't have trust or authority, then filter it out.
May I ask, when your network got hit with this penalty, how old your sites were and how much backlinks you pushed to them?