None of their tactics are sustainable at all, so I'll never use any of them. I do read some stuff on there though, because it's pretty interesting.

The problem with black hat techniques and forums like this can be the fact that you are going to learn stuff that could adversely impact your business going forward.

Things like "backlinking" and "linkwheels" and fly by night techniques are popular within the blackhat world as they chase holes in Google's search algorithm for temporary success.