There's already a windows based software application that does precisely this, and its only a couple of hundred bucks to buy. It's got loads of historical data, and monthly updates.
Can't remember what it's called (but I have recommended it here at the zoo a couple of times previously and provided links if anyone can be arsed looking)
If you look around, there's a few web based versions too, not quite as comprehensive, but should be easy enough to put something decent together these days very quickly,
A few sites have tried this, and although in some cases they have technically better solutions, and reasonably active membership, FF still seams to dominate. I'm not sure why that is (probably the speed at which they upload new data releases)