But I just learned about it, so it is conceivable that I'm not the only one.
XBConnect ain't a bad piece of software. Like Gamespy's Xbox Tunnel, XBConnect lets you host and join Xbox games online. Both of these products could be seen as alternatives to purchasing Xbox Live - I brought this up when I talked to Microsoft actually, and they didn't seem too worried about this sort of technology. They see the benefits of voice and content downloads as being fairly significant reccomendations for their service.
Oh, and that's another thing. I heard this fucked up rumor that a version of Halo with Live support was coming soon. That would lend credence to those "Halo 1.5" rumors that were out there for a while, but I haven't heard this verified anywhere else, so keep your expectations low.
(CW)TB