"They remove lag. When you click a thread with 500+ posts, it'll take a while to load, so better lock it up and start a new one."
Not really. BB pages load with 20 posts per page, so load time is roughly the same for every full page.
"Revives. Some people don't wanna go to the pain of searching for 1 specific thread, to post in, so they start it again"
Then you speak of laziness. Actually, I maintain that usually people don't even think of searching for a thread in the first place. And making threads (especially in Misc.) is, more often than not, a spur-of-the-moment thing. But that's getting into another issue.
Now if I may:
Duping threads is a drain on website database space, shows a lack of creativity, is a waste of time for users who've seen the original, is often a source of spam, and obviously means more work for BB mods. It's like littering when you can recycle--doesn't make sense. So more power to the bump.
Yes, I know; I take the BBs too seriously. But we're past that. =p
By Biphenyl (958)
By Darmani Link (2821)
By Limxzero (5330)
