I love Seatguru--it has helped me avoid undesirable seats and get decent ones on several occasions. One time I even had a near-argument on the phone with a DL
reservations agent. She said she could offer me a certain seat on a 757 but that there was no window. I checked Seatguru, and it said that the no-window rows were ahead and behind the row that was available, but said nothing about that row. So I ended up taking the seat...and guess which was right? Yep, Seatguru.
It's really a valuable resource, especially for longer flights where it really stinks to discover that your seat doesn't recline, or that you're constantly being elbowed by people waiting to use the lav. My only complaint is that they don't have more airlines and equipment types listed!
Common sense is not so common. -Voltaire