Some suggestions off the top of my head:
Searching PMs by username doesn't work with the current forum (or I'm doing it wrong).
You could add a built-in auction end timer, so people know when to stop bidding and don't have to rely on external countdown .gifs.
You could add a custom field for date in
Press so you could sort news by date and keep the same formatting in all thread titles.
Get rid of "1 bitcoin=$400
www.usflne.com buy now" spam bot threads