Websites and blogs can get messy. After a while you have so many links to this and that and the other.
What if one of your links is not working? How would you ever know?
Dead-Links to the rescue! http://www.dead-links.com
I have been using this handy dandy little tools for years.
All you have to do is type your URL into the box and it spiders through your site (not the protected areas, tho) and it finds all the dead links.
Then you can go and fix those pesky links. Thank you, dead-links.com.