I know Randy is raking in $$$ with FlyerTalk, but he should keep an eye out on TripAdvisor because they have some great features. I find the message board threads on TA easier to navigate, much easier to search and of course the user-posted pictures of hotels is a great feature.
I think they have more traffic than FT with lots of newbies so more basic questions to sift through. The new user profile is great, because you can easily see the person's info and previous posts to see why their opinion may be different than yours, again, something FT does not easily do.
(Yes, FT is more targeted to crazy point collectors like us and hard to compare the two, but things can change quickly on the internet)