This isn't going to do you iPhone 4 types much good yet, but it's interesting to note that the current version of redsn0w apparently works like a champ for jailbreaking your old iPhone 3G (yes -- 3G -- not 3GS) along with second-generation iPod touches running iOS 4.0.2. As we now know, 4.0.2 materialized for the sole purpose of patching up the PDF exploit that allowed JailbreakMe to do its thing, so it's kind of funny to see that redsn0w is still able to do its thing unhindered just not on the devices most of us ca