I kinda think we should be able to delete our own threads, even after people have commented them and no matter how old the thread is.
Like, in the yard sale forum, I had created a new shop, the one I'm currently using, because my original didn't have enough reserved posts at the beginning to fit everything I wanted, I had actually met the max character amount allowed and I wasn't even close to being done with adding all of the items I had.
But now it just sits there, collecting dust, and if we could delete our own threads, it would help us keep the number of dead threads from littering the site, lol.
It's just a thought, though...