Easy Mesh Networking?

PacketHop is supposedly launching their easy mesh networking solution, that is designed to extend current networks, no matter what wireless technology they use. The article is woefully short on details as to how it plans to do this, but I'm sure details will be coming soon enough. There have been a bunch of other attempts at mesh networking, and every few months another startup comes along. It's not that the technology doesn't sound useful, but it never seems to get much traction.