Deep Googler
A person who "googles" not only you, but your friends, proceeds to research you through other online facets (facebook, finds your Twitter account, even manages to dig up your outdated MySpace account), and friends your friends in an over-zealous effort to awkwardly fit in.
Man, she's a Deep Googler, and as a by-product, she's my best-friend's friend now... Totally not weird at all...