They are edible, but they can be rather bitter apparently. I've never eaten them before, but I just googled "carrot greens" and found a good bit of information. They're apparently chocked full of nutrition and, if you want, you can mix them in w/ other salad greens in a normal salad.
1st goal - 10% of body weight lost - MET 06/21/10
2nd goal - 100 lbs lost
3rd goal - 180 lbs!!!