This is rather disconcerting, from their website:

"While Jumpjet upgrades its services, we will temporarily suspend new membership enrollment. This is only temporary. Check back for updates. Please call 1-800-FLY-JUMP for a customer care call back."

This sounds too good to be true, as some reviewers have said. Does anyone know if they are actually flying in any of their cities? I thought they were supposed to launch in one or more in late May. I'd be real interested in hearing any experiences if they are flying.