This is a little off topic but I have been playing with the social software application building "playground", Ning. Its great fun and an easy way to test out ideas for social applications, so here is one I made earlier that may be of interest: Window Seat.
Have you ever wondered which side of the plane to sit on for a great view of, say, Mont Blanc when flying into Geneva? Tthe idea behind this application is to share that information and tag it with a 3 letter airport code and 'left' or 'right'. You can quickly check out which side to sit on by looking up an airport or offer your own advice on the best window seat.