Coffee Recycling

Photo from sustainablog.blogspot.com
 Have you ever tried fertilizing your yard or garden with coffee grounds? I just saw this on a blog and it looks interesting. As much coffee as my roommate and I drink, we could fertilize the Grand Canyon. That is no joke... we have a problem. If in fact this does work, I would like to try it. Does it make your yard smell like coffee? Does the kind of roast have any effect? If anyone tries it, let me know!