it looks great so far, thanks
It would be nicer if the thumbnails would have maintain the right width/height ratio.
Another idea:
* option in admincp to set 'private/public' default per usergroup.
* Link to person's uploaded files
* prevent hotlink outside messageboard
* 'copy' button next to the imagelink (so no select -> rightbutton -> copy)
* show thumb + link right after uploading