Generally, burst posting is not against the rules of the forum as long as you don't spam. But every manager has its own rules and criteria.
Yahoo62278 defines Burst-posting as follows.
Burstposting definition- A person that makes a posts then 1-5 minutes later makes another, and another, and another. I will not add someone here for burstposting if they have 1 post right after another every once in awhile. Sometimes a person reads the forum and makes a reply, then sees another topic they have a constructive reply for, but if quite a few of your posts are 1 right after the other, then you'll find yourself here.