nit-twit 

A person who constantly tweets, flooding you with inane details about their daily activities.

John is a total nit-twit, I've gotten 20 tweets from him this morning, the most interesting of which being that his cat loved the new cat food.

nit-twit by golden wench October 14, 2009

nit-twit 

individuals who constantly write meanignless posts to social network sites like Facebook or Twitter.

That nit-twit is constantly posting his location, not realizing we really don't care.

nit-twit by Tall New Yorker November 30, 2010

nit twit 

A person who attempts to tweet but is too dumb to use or understand Twitter

John keeps f-ing up his tweets. What a nit twit.

nit twit by mmowry April 28, 2008

Nittwitter 

People that are obsessed with Twitter

"Hey John, are you still dating that chick that does nothing but Tweet all day long"

"Yea, I sure am, she is a total Nittwitter"

Nittwitter by LOMY March 20, 2009