I've been using one for a little while. It's got 4 nice loops on each corner, each with a mitten clip attached as well, and I haven't had any problem's with it leaking in even moderate rain (haven't had it up during any heavy storms, but I doubt it'd have trouble. I have noticed it's a little tricky to string up tightly, I don't know if that's because mine's not perfectly flat or because the diamond configuration just tends to be less tight. In any case, I definitely recommend it. I'm in the process of sewing on some more tabs but I've found it too small to use as an a-frame with my hammock.
Also, I think there's a 20% off coupon for the kelty site out there somewhere.