Stumbled across this just now. New data (with some sources cited, but not many), on the Internet in the US and for the rest of us, from the end of 2009:

My awesome friend Heidi Campbell has scored a pocket of money from Texas A&M University to seed a Virtual Centre for Research into New Media, Religion and Digital Culture. She’s looking around for people who may have any ideas, opinions or resources to share. If you’re one of those people, check out the Facebook page and contact her there.