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2.
Excessively posting random statuses and links on Facebook resulting in friends hiding or deleting you to prevent further viewing.
"Did you see what Mandy posted just now? She's on a rampage!" "No, I was tired of constantly seeing her postitute herself on Facebook, so I hid her from my newsfeed."
by iFakeSarcasms November 13, 2011
 
1.
One that posts useless drivel in a forum for the sole purpose of raising his post count.

Synonym: postwhore
I wish Luke would post something useful some time. He's such a postitute.
by birq September 18, 2006