Vote in an episode: +10

Start a forum thread: +3 · Reply in a thread: +1 (up to 20 forum points a day)

Solve hidden secrets: points vary, and the first few solvers get a rare badge.

The team can also hand out points for contests and events.

What points do: they show you're a real member. At 25 points the new-account limits go away (links, threads). At 100 you get a shorter wait between posts, more picture uploads, and your reports go to the top for the mods.