Commentatition 

A competition between 2 or more people to have the most liked comment on someone else's status.

Bill and Fredrick had a commentatition on Jorge's facebook status, and Bill won with 12 likes.

Commentatition by Straightuphoss August 2, 2011

Commentation 

The act of conversing through comments on MySpace, facebook, or any other networking website.

Dude she sent me a comment so i sent her one, and then it was one after the other, it turned into a commentation!

Commentation by Shawn, Megofna, Tam, Duong May 28, 2008