It's true! I gave up Facebook for Lent! It's been a lot easier than expected. And a lot more difficult because it's easy to find other procrastination sites on the web. Including webcomic xkcd
The author of the xkcd is insightful and brilliant. He's also human and gets sucked in to online distractions like the rest of us. Here's his solution to regaining lost productivity (Bonus: your house might even get tidied!) Make sure you read the comments, offering different ways of achieving the same goal.