It really depends on what I feel like doing. Most times, I just pay more attention to Vizzed Chat when it's dead or too active (though I do that when I'm even not bored), or decide to play a game, which kinda ends up being Sonic Adventure 2, Nya~

Other times, I decide to post a bit more (Like now!~ x3) or just lurk and browse through Reddit, mostly through the main board, r/Atheism, r/Anime, and r/Touhou (though it doesn't get updated as often as the last two).

If all else fails, I decide to just pick up a random anime to watch (since the people who generally recommend me anime are quite unactive...) or rewatch some past anime series that I really liked. I've done this only with Gurren Lagann, Cowboy Bebop, and Puella Magi Madoka Magica, though (for the first two, it's mostly the last episodes or a specific episode I liked. For Madoka, it's just rewatching the whole series ), Nya~.

Though, no matter the situation, bored or not, I'm always listening to music. It's only when I'm actually bored that'll make it really difficult to find what I want to listen to. x3

If I get bored then I tweet that I'm bored.

When I am board I usually sleep!  I usually use my free time to play games and check out Vizzed. If I am into a good book I will use my free time for that. I don't party or anything like that. More of a hermit, so gaming is my boredom fixer.