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.
+1 to this. This service for me will not cause any ban as per forum rules. BUT this isn't the main purpose of this good forum. This forum originally created to explore, gain knowledge about crypto/digital currency. Imagine a Legendary account holder doesn't know anything about atleast bitcoin since they had this kind of service where someone was working/posting for them. For me, having a high rank also includes maturity when it comes to this digital currency industry. Knowledge about crypto, having fun learning here is still the number 1 you should consider and everything including side job will follow.