TRADE shortcuts

[vjlm30]

I wonder why other people this words when they are trading sneakers.
Pass
BUMP
Up (^)
What is three words mean ?

 

[vjlm30]

I mean what does this three words mean ?

 

[Sneaker P]

Pass = Not interested
BUMP = To bump a post so that is is visible
Up (^) = Either to bump a post or referring to the post above.