Bumping isn't really necessary (most of the time), but you can bump. Typically if you have a selling/buying thread, you must wait 5 hours to bump. Chatting isn't welcome on those and moderators like @(you need an account to see links) will delete any unnecessary posts.
The PC is a pretty scary place! Especially with all of the accounts getting frozen lately. It's like TNT or other Neopians are raging war against one another.
Anyway! Welcome to clraik, Jazzy! It's nice to meet you.