From now on, all users have up to four chances before their account will be banned. Any user breaking a rule will be warned, but after that, any rule break will result in an infraction. Rack up three infractions and you'll end up banned - so I'd recommend checking the rules frequently to make sure there are no mix ups. To find out how many infractions you have, check your profile. There you will see the reason you received it, and also a link to the post it is from.
Thanks,
Ryan