Hey, no need to apologise - I was just confused (not difficult) - here's an explanation written by Chriscim (its in our FAQ forum)
Bumping
Ok, before everyone ask what those messages that people have that say nothing but bump, I will tell you.
When someone puts in the word bump as their message, it means that they are bumping it back to the top. See, when someone replies to a message, it goes to the top of the message list in the forum. So when someone "bumps" a message, they are shamelessly bringing their message or whoevers message back to the top of the list.
You could also see 'A guide to Bluelight acronyms' in the New 2 XTC archive.