I waste my time by checking the Universe Sandbox Forum, then checking Astro Empires, then checking the news, then checking IRC, then checking the Universe Sandbox Forum, then checking Astro Empires, then playing a random video in my favorites on YouTube, then checking IRC, then checking forum, then checking Astro Empires, then Google Reader, then IRC, and so on...
It's really annoying when I am completely aware of it but just have no idea what to do about it. :/
Sometimes I manage to play a game like Civilization 5, SimCity 4 or Minecraft/Blacraft. Usually I just don't have any idea about what to do in SimCity or Minecraft, so I log off again after like five minutes. Otherwise SimCity 4 usually just crashes. Civilization 5 usually has plenty of things to do if it doesn't crash.