This is easy. I sometimes find myself just clicking around, bored, looking, reading, and generally wasting my time on the Internet. Here is a list of some of my favorite places to go to do it:

• slashdot - News for nerds. It's really easy
• lifehacker.com - Tips for just about everything.
• Google Reader "Explore" - finds feeds related to the things you read. This is a huge time waster, because it never ends. The recommendations get less relevant, but Google can always find something to read.
• slickdeals.net - A huge collection of good deals on anything. I mostly look for electronics deals, then wish I had money to take advantage of them.

Another few ideas that I haven't done for a while:

• StumbleUpon - a social bookmarking application. You bookmark sites you like, tell them what categories you are interested in, and StumbleUpon will provide you with an endless list of websites.
• Facebook (I still use it, but I don't check it nearly as often as I used to)

What other sites have you used to pass those bored moments at school/work/home/anywhere?