Rename.Net
What's good about this service is that, since it doesn't just redirect, they hide the original location of your web address by use of a URL framer, which is another form of HTML. This way, search engines recognize the web address as a separate entity, with its own META tags and page title -- not just a simple redirector -- and lists the site as a separate entity. It's also useful for those people who still have long URLs. It's a great and cheap way of personalizing the URL of your site. Also, useful if you're one person who moves your site around a lot! Just change the re-direction and your visitors and fans won't have to change their links. Amazingly, it was the first time I encountered a FREE web service that had great customer service. If you email them, they are sure to respond to any questions, comments, suggestions, or criticisms. I first wrote them regarding their not being able to support URL framing of GeoCities sites, and they responded in a really friendly and helpful way.