I posted this on another thread, but this applies here just as well.

1) You have to have 75% of the votes. If its a 4 man dungeon it has to be unanimous; in an 8 man, 6 out of the 8 are required; in 24 man you have to have 18 of the votes.
2) New players cannot be kicked no matter what. Their name doesn't appear in the kick list.
3) You only get 3 kicks a day. That way it limits what the elitist will vote for.
4) If you get kicked you are warned. Twice in a day you are locked for 15 minutes. Three times an hour. On the fourth time you are locked out until a set time per region. (EX: 8:00 am PST)
5) If you kick someone you have the option to leave a highly censored message 25 characters or less that are visible on the Duty Finder screen of the kicked player until a check box is marked. Any locked out time (see above) doesn't start until this check box is checked.