A ban will be applied to an account for any of the following - the type/severity of the ban depends on the nature of the breach (specific details of bans below):
Buying fake followers
Misrepresentation (uploading others' music and claiming it is your own)
Removing reposts before 48 hours has expired
Abuse of the *CommentPlus feature
Abuse of the referral system
Abuse of the feedback system
Fraudulent payments/transactions
Offensive/threatening language to Re-Ex staff