power posting

Synonymous with spam, it is the posting of multiple messages in a short succession. It is usually done to gain certain privileges that require a certain amount of posts to gain, or to simply boost one's post count to make them seem like they're a more experienced user (although this is usually not the case with people who power post)

Person 1: *new thread* "OMG hi guys!!!"
Person 1: *repeats the above about 500 times*
Person 2: "I think Person 1 might be power posting."