This gets used on messageboards / forums to signify that the previous post (or a post that has been quoted) is either of such high standard / very useful and answers the question of the original post / owns someone that the thread cannot possibly contain any post that's better.
USER 1: Hey guys, who do you reckon is the greatest rock band in the world.
A forum term used when nobody posts in a thread for a certain amount of time, or when a person makes a smart-ass remark therefore rendering the thread useless. Known to most people as "the end of the thread." Can also be used for the end of a post or any other event not regarding the thread.
Poster #1: Which person would you like to ban from this forum?