Yeah it does seem like there's a flood of "What board" threads lately. I think new posters are told to read the FAQ before posting, but I'm not sure how many do.
Maybe suggesting they read that thread before posting a "What board?" thread would help them get better responses (and may hopefully make it so they don't need to post a thread at all!)
For every 1 good discussion there are 5-10 threads started by people too lazy to research things themselves, or want to be told what to get.