An act that often happens on message boards where a member will not read far into the archives and will post a link or story that has already been posted and discussed throughly.
Awww man, JCOS made /another/ repost? That's the sixteenth time intwo hours! The guy's a madman!
n00b:"Check out this page of hamsters dancing that I found!"
user123:"repost"
pokemonYay54:"learn to use teh search function!"
asdf25:"Learn to spell!"
Guy:"Hey, I just heard that Eli Whitney invented something called the 'cotton gin' and it's supposed to revolutionize-"
Fella:"Repost."
(1) Copying a post on the Internet. Often with credit, but also without. Mainly on blogs and social media sites. (2) Starting a discussion on a message board that has already been started.