Someone who has created the perception that they're more famous than they are. Pseulebrities are avid social networking users; they complain a lot, ask for free stuff and talk about themselves in the third person. They live in a vacuous online world where followers, 'friends', 'likes' and blog views mean more than sex.
Susan thinks she's so Fauxmous I wish she'd stop tweeting about how busy and important she is, she's such a Pseulebrity
People who are promoted as being "famous" despite the fact they're really not all that notable, and are frequently "famous" for no readily apparent or worthwhile reason.
Most Reality TV contestants and Local "Media Personalities" are examples of a Psuedolebrity- they're not really all that notable but the media wants you to think they are.