Making the Database as Small as Possible

[Digital Jedi]

Hey gang. I'm trying to make the database backup of our forum smaller. I know we need to prune some old users and threads. But I was wondering what other ways there are that I might be overlooking.

I know I read somewhere about a way to purge the signature data, but I cannot find it. I was also wondering if avatar info was part of that and, if so, if there's a way to clear that out too.

Any links, suggestions, ideas would be appreciated.