Me and some buddies tried it this summer, quite fun i think, just make sure your nose is clear. Also, as an amigo found out, make sure you do just a pinch or so, a teaspoon will do some horrible things to you for a few minutes.
That being said, I wouldn't do it every day. Much like dip I enjoy it on occassion. If you're gonna be trying it look for a honey one, it's much more mellow then regular. If you like coffee they have an espresso one I've seen before (ofcourse different brands will have different types).