Was playing around with a WP blog on a 2-year old domain, trying to compete for a 22+K/month keyword with 3,220,000 competing pages. After 3 weeks of SENuke-powered buffer sites and SB-powered comments to these buffer sites which saw me reach page 4, I decided to get more aggressive and launched a 500+ visible comments campaign and around 200+ visible forum profile campaign, this time aiming the links straight to my money site. I got bumped to page 3 for the keyword and then the following day, got bumped to page 10. I'm tempted to think it's an overlinking penalty since the domain never went through a deliberate link building campaign (most of earlier links were off other scrapers and they weren't that many). What should be my next move? Do you suggest I stop the link building campaign and go on to the next experiment (different domain) or do I continue with this and hopefully get stronger once the penalty gets lifted? I have time on my hands so I'm really interested to see how I can get it out of the penalty (a good experiment to do on its own).