[BoardTracker]

Originally Posted by Yorixz

I'm wondering; will this actually return better search results than the default search, as I know, out of experience, that it doesn't really check for relevance but mainly just lists the hits, while search engines like Google check other (probably more important) things.

Yes. BoardTracker search returns relevant results. Much more relevant than internal search does. And much more so than google.

Originally Posted by Erwin

Good idea, but would be dependent on how quickly your bot spiders the posts? And it won't be able to spider private forums.

Indeed it is dependent of the crawler of BoardTracker. But this is much more timely and accurate than one might imagine. Threads are detected very accurately and efficiently. Most threads are indexed less than an hour after creation. In cases of busy forums, this is many times even more frequent.
BoardTracker can index private/hidden forums, but that requires the board administrator to ask for that specifically.