An attention whore and a voyeur.
Seriously, think about it. A voyeur likes to watch people do things. While in the normal sense of the word the things that a voyeur likes to watch are sexual in nature, this can extend to other things. Like Facebook stalking people. And staring at people on public transport.
An attention whore is someone who loves attention, and will do anything to get that attention. Maybe it's a pride thing. Maybe it's a needy thing. Who knows? In any case everything an attention whore does is carefully archived away into photos, videos or words to be accessed via some social networking site.
The perfect couple... the attention whore regulars acts and reaches out for validation while the voyeur watches and gives their silent (or not so silent) approval.
Pretty messed up huh?