Have you noticed that using the search at the top of the screen here searches in posts by relevance by default?
You find a hell of a lot more if you go to search > advanced search
then suddenly by default you will be searching in thread titles! Make it sort by number of replies to thread, assuming for a second that the biggest threads tend to be the most interesting... and you should get a lot out of our own nice little engine IMO.
So, I copied the OP to the thread linked to by Dwayne.
This thread is obsolete so I will close it.
Hopefully you guys find my advice about the search engine helpful, otherwise please let us know in the suggestions and improvements sticky thread, or use the search engine to find a thread about the search engine. (lol)