Sold.
There really needs to be an option for users to delete their threads in all forums, especially this one. Works on some forums, though. Closing threads doesn't cut it.
It'd be nice if the old threads were purged, too. There are 200 pages of posts, going all the way back to 2003. These come up and clog the search results. Threads in the for sale forum with no new posts could be purged after a set time, like a year or something. Even just limiting the forum to 50 pages of posts or something would be a great help.