If you are not sure enough about the quality of your posts, better split them among 2 or more accounts, if you are going to post 50+ posts a day, so you won't draw so much staff attention to you.
I think this is a good idea, as if one is banned, then you've got the other (presumably the high quality posts one ). It would also not "draw a lot of attention" to the accounts. This would (probably) be a way around the limit on posts per day for some signature campaigns too.
However, what if somebody makes a connection between the accounts when one is banned? Wouldn't this have an impact on the other? Does this mean you have to keep information relating to both accounts under wraps, to prevent people from making connection? Or would people (this includes staff) just not care?
I don't care if there are poeple from the campaign watching me and checking my posts, I will always post top-quality posts. I want to ask for a higher rate per post. Every campaign will ban the whole bunch of your alts except one if they find a connection between them. I don't recommend you 2 accounts in a one campaign. Best way to earn a lot is to spam top-quality posts. Nothing hard.