JailbreakMe.com, the one-click web-based way to jailbreak your iOS devices, is back online and ready to jailbreak your iPad, iPhone, and iPod Touch. From the Jailbreakme.com website:
JailbreakMe is the easiest way to free your device. Experience iOS as it could be, fully customizable, themeable, and with every tweak you could possibly imagine.
Safe and completely reversible (just restore in iTunes), jailbreaking gives you control over the device you own. It only takes a minute or two, and as always, it's completely free.
Please make an iTunes backup before jailbreaking.