For how much percent of profit do you gonna work?
I guess all those accounts will ban by the forum soon, cause of you surly don't plan to work only for one person, but for some of them and it's forbidden to write for multi profiles. They will search you by Internet IP sooner or later.
The forum/staffs will not ban them, unless they didn't follow a specific forum rules like spamming, deliberate unconstructive posting etc. AFAIK, only theymos can see the ip logs per account and it will be a lot of hard work to track this whole thing. In short, it's impossible to recognize what/who's account is availing the OP's service.
Clients only have a risk of their account getting banned/hacked on OP's misuse.