If you’ve been a webmaster very long (I started in 1995) you learn quickly that links to external sites will eventually break. Website-sites go down, domain names change, pages get stale (and eventually deleted), old pages become available via subscription only, and finally sites get abandoned
As you build your site the number of links can get pretty large. IndyScan.com has several thousand links and up until recently it’s been a challenge to make sure every link took you somewhere.
When I moved the site to a new host last weekend I found an application that makes the process of monitoring external links a breeze. Broken Link Checker has been a HUGE help with cleaning up dead links in posts and it does it automatically every couple of days. I even get an email report letting me know what’s broken and why.
If you use WordPress this is an awesome FREE plugin to help you maintain the links on your site.