I read Fark fairly regularly. It's informative, entertaining, random, and offensive. It can also be a huge time suck.
Tonight, I ran across this link to an article on Yahoo! It basically says that if you don't get enough sleep every night, you will die. The article is interesting and worth a read, although it does seem to confuse cause with effect.
The useful content is actually in the Fark discussion thread about the article. It takes a turn for the serious while some users seek help and others offer advice about sleeping problems.
Sleep apnea. Depression. Insomnia. Not being able to fall asleep. Being tired throughout the day. They're all in there. If you think the way you sleep is different, or broken, someone else may have a similar experience. I'd suggest reading through the thread.
There is some advice about sleep hygiene, but the key thing that most users suggest is that if you have issues with sleep, you should tell your doctor yesterday. They can help, and life can get much better.