netophile
netophile-(net-uh-fahyl) one who is overly obsessed or has an unhealthy addiction or attraction to the internet,noun. (Origin)from the modern abbreviation of the word internet net and the greek word -phile- to have a strong affinity or attraction.
Your mama is such a netophile, she has seen more profiles than a booking officer.

My girlfriend searches the net for everything. She is a regular netophile.

Dude, you know you got a wicked case of netophilia, when you've been changing your myspace layout more than your tightey-whiteys!