From Comcast, (which stands to benefit as people realize dial-up won’t get you to church):
The sites share the same basic approach: rock-style worship music and a sermon recorded at the in-person weekend service that is quickly mixed with live or recorded greetings expressly for online viewers. Volunteers on live chat emphasize that day’s Bible teaching and block inappropriate posts. (During one recent service, a man who said he was logged on from India wrote that he was looking for a Christian wife.)
Still, each has individual features.
At Seacoast Church, based in Mount Pleasant, S.C., online viewers can repent by posting a private record of their sins on a cross. Thumbnails of viewers’ Facebook profiles appear during worship on Central Christian’s Facebook Church so people can click on each others’ pages to quickly connect. On the Granger site, visitors will be able to choose “seats” in an auditorium, then click on surrounding seats to exchange Facebook and Twitter addresses.