Twitter T&Cs

[jcommerce]

We're considering running a promotion to donate some cash to a charity for every new follower we gain during our user conference.  Could this be considered buying followers, which could put our account at risk for closure?

[LesleyPaone]

I would think no, because you are not actually giving money to them. These kind of promotions are quite popular, I think if they were against Twitter TOS they would have been mentioned by now. (In reality isn't it basically the same as advertising on Twitter?) But also apps like rafflecopter are allowed which is in a sense buying follwers as well.