Did you ever build Adsense sites?

So here’s a blast from the past… did anyone else build targeted adsense sites “back in the day” like say 2004 to 2010 (or any time really), and manage not to get your account(s) banned?  If you did and still have the account(s), I’ve got an intriguing possibility for you.  Leave me a comment and I’ll reply to you privately as I don’t want to discuss this publicly.  Thanks!