[bairy]

I think the thread prefixes are okay. It's just a different way of viewing subforums but with the advantage you can view them all at once.

I don't like the idea of merging all hacks into one generic forum "add-ons" though. For one thing, code modifications aren't really addons.
Pedantics aside, I know it's probably a bit easier for collective searches - though advanced search > select the forums you want always worked fine.
And I know it looks a little less confusing to new people, but it's frustrating to have to go into each result and scan the textboxes to see what type it is.

It's not so much a hack db as just mass merging.

This site has tons of hackers and designers on it, as well as many more casual hack users. Wouldn't it be better to ask them what would be a good design to have rather than just assuming and throwing something together that doesn't actually make things any better?