It was with adwords...it was back when I was just getting started and I did affiliate marketing. I promoted this weight loss clickbank book...it didn't pan out, so I paused the ads.
My mistake...TWO YEARS later, I get a notice that they've shut down the account with bots because apparently that type of advertising is no longer allowed. So my old approval got tossed...and my account got perma banned over something that happened 2 years prior.
I filed an appeal, and that got ignored.
So I just said screw it, and created a new account. If Google won't play by its own damn rules, and will apply rules retroactively, I don't see why anyone should follow the rule about no duplicate accounts.
So I just signed up for adwords with a po box and did everything via VPN to avoid getting banned for duplicate account(matched via ip address). And it worked just fine.
That's the thing, all this bullshit that Google does...only hurts legitimate publishers.
The black hatters(who these rules are actually supposed to be for) only get a slight slap on the wrist...since all they have to do is just pay $5 to get a legitimate approved Adsense/Adwords account. Then just continue doing whatever they were doing before.