I am close to getting the "cast close/reopen votes" privilege, and I will be reviewing close and reopen votes when I receive it. It is quite fun and interesting to look through the review queues and review stuff. But, as I am not quite used to the close and reopen queues yet, considering I was warned by a moderator just now over robo-reiewing while looking through the queues in Politics SE.
Review bans are just like account suspensions - the duration increases with every new ban. For example:
1st ban: 2 days
2nd ban: 7 days
3rd ban: 30 days
4th ban: 365 days
5th ban: Permanent
What causes review bans, and how can I prevent them from happening?