I think a search engine for the forum would be a wonderful addition.
...because then you'd be able to quickly find it's been requested before! ;)
You can find it under "Advanced Search". You can search for authors, titles, posting dates, and even by full text search. What is missing IYO?
He wants a search engine for the FORUM's. And, as crowded as the forums have become, I think it may be time for a search engine instead of slogging through umpteen million (or so it seems)posts to find what you're looking for.