bump?

i always saw it in B/S/T (Buy/Sell/Trade) Section…

what does it mean?

Bring
Up
My
Post

It’s like a internet slang or just a short cut
Just to put your post back up to let everyone to see it than just ignoring it ;D

Exactly what I wanted to know. I think it might mean to skip a trade from a person. (i.e. auditions; if you do horrible, they say NEXT) That NEXT! Is like a bump.