I'm considering implementing a change to the forum that would provide "Float to Top" capabilities. The idea behind this is that whatever the most recently replied to message is, that message is listed as the first one in the forum.
More active threads naturally stay near the top, and less active ones "float" down. The upside to this is that if someone has insight on a post that is very old, it can be noticed and brought back into view on the first page.
This would make the "latest posts" area less necessary, since you would easily see which posts are on top -- though I wouldn't take away the "latest posts" area since it serves a slightly different purpose.
What do you think of this? Is it a good idea? Do you see any down sides?