I've eaten 'em a number of times.  You have to be very careful to only take clean red meat.  You want to remove the scent glands and all fat.  What you have left is a quite bland tasting meat.  You can use it in things like Chili and the like, but it's nothing to get excited about.  Not worth the bother IMO opinion unless you want to do it for the novelty or you are too broke to buy hamburger.