hi, doing some research, need info on the below 4 questions, thx!

1.  # of Christians who use the internet in the U.S.
2.  # of christians who use mobile phones in the U.S.
3.  # of Christian websites in the U.s.
4.   Dollar amount spent on advertising online directed to Christians
(ie # or ads and $$ spent targeting Christian consumers in the us)

Try this link, they may have the information you are looking for.

http://www.barna.org/