I received an email this morning from EzineArticles regarding a link at the end of one of my articles from May of 2008. They were letting me know that the link was no longer valid and giving me an opportunity to make any changes that needed to be made. I went into my account and saw that the domain name was one that I had not renewed, so it would not properly direct someone to the page I had intended.
Be sure to check your links regularly to make sure they are all still active. If you do not renew a domain name, that link will not work. I love that EzineArticles notifies you about this type of thing, but no one else will do that. Make it simple for someone to contact you and let you know if one of your links is broken.
If you have written short reports or eBooks, look through them and make sure everything is in proper working order. It is easy to change digital documents to make sure that no one clicks to go somewhere that no longer exists.