This is exactly the kind of cool crap that free software is for: here's some commodity source code to do $foo, now go and embed $foo into everything else in novel and unexpected ways.
Work is now underway on the Firefox-powered features. Development will proceed along the following "road map":Link (via Wonderland)
# static external webpage in 2D browser, no interaction.
# static external webpage on prim surface, no interaction
# update URL for primitive, all viewers get update
# LSL call to set URL for primitive
# webpage from script/notecard/typed-in HTML
# interactive web page in 2D
Update: James Cook, co-developer with Callum Prentice on this project, notes "I'm probably not going to be able to put web pages on your avatar's face or shirt. Unfortunately, avatars are 'special' -- the best I can promise is local traffic conditions on the windshield of your virtual car, or a weather satellite image on the ceiling of your house."
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.