Would a monster database for the site be good?

http://runescape.salmoneus.net/forums/index.php?showforum=12
There you go.

Although it's not yet on the main area of the site like the ItemDB, it is expected to be with the new site in progress. Sal is rebuilding his whole system and making a number of improvements.

Wow, that's so cool! I should go contribute to it now.

Dude, you came at the right time. There's a Database Drive going on right now, where if you submit to a certain DB you'll be in the running for a good prize. But, that still doesn't mean that you shouldn't contribute to the databases whenever possible.