Wonder how many calories you're burning?

http://caloriesperhour.com/index_burn.html

I noticed someone wondered how many calories she was burning doing pilates. caloriesperhour.com has a list of every activity you could ever do in a day - from housework to waltzing (who does this?) and all the other more traditional forms of exercise.

The one thing it doesn't include is the Gazelle thing. I bought one (it's amazing), and I have no idea how many calories I'm burning. Anyone know?