Participants may not bump threads unnecessarily. Bumping is posting useless information, posting one-liners or any other action to deliberately keep a thread hot or to bait others.
Bumping and adding new info are 2 different things.
The term "bumping" refers to non-informative posts, such as "TTT", or "Bump", or "+1", etc. Finding an old thread and adding experiences, updates, new information, etc is not considered bumping and is allowed.