"Pointless thread" is the name of a discussion thread on a number of political message boards begun by a single person known only as "Chanty".
The first one began on the "Real Time with Bill Maher" community message boards but has also been added to several others.
The thread is meant as a way for users to talk about anything without fear of deletion for going off topic. Generally speaking, a post on this thread should not have a point, but be a random thought passed to others on the thread.
The "Pointless Thread" is the most popular thread on the Real Time Boards.