Regarding Bumping:
A.) Don't bump within 24 hours of your last post. It's pointless. Also, no replying to each and every post on your thread just to bump the thread up.
B.) Bump for a legitimate reason. Legitimate reasons are things like adding items and changing prices. Reminding people of stuff that they can already see on other posts or asking for more customers is not a legitimate reason. Nor is simply posting "Updated". Give details. Ruthless "bump" posts will not be tolerated and users doing so will be punished harshly.
C.) Do not deletebump. (this is when you delete a previous post, and then post again so that the thread is bumped up)

BOTH REQUIREMENTS A AND B NEED TO BE FULFILLED FOR IT TO BE CONSIDERED A LEGAL BUMP. ANY BUMP THAT DOES NOT FULFILL THE REQUIREMENTS WILL BE DELETED AND THE USER WILL RECEIVE INFRACTION POINTS.