I have a website showing very well with Google right now and this site has a SLEW of back links going to industry.com. I guess it's just a matter of time before Google figures this out and slaps the site with a manual spam application.
I have had several of my sites slapped and 2 have had the application removed, one is now showing in the #1 and #2 position for the most important terms, the other has not recovered and I am thinking about taking it down and starting fresh with a new domain.
A third has been slapped and I can not for the life of me to get the manual spam application removed.