It sounds like a headline from the The Onion, but it's true: A project called "Homeless Hotspots" is turning homeless Austin residents into mobile wireless hotspots outside the South by Southwest convention center.

It's part marketing stunt, part genuine charitable initiative -- and it's generating lots of double-takes and chatter from those who pass by.

"I'm Melvin, a 4G hotspot," reads the T-shirt of participant Melvin Hughes. "SMS HH Melvin to 25827 for access."