We’ve discussed linkrot way back in July of 2002 in context of never, ever, EVER deleting a well indexed link on your own site. But what about links to other sites?
Let’s face it, the one thing we know for sure about the Internet is the uncertainty of hyperlinks. Servers go down. People change careers. Hackers destroy things.
One nice and free tool to check the links on your site is w3C’s Link Checker. You merely enter the URL and presto, it offers you a variety of ways you can view the status of your links.