*** FREE!! FREE!! FREE!! ***
Letting your users link to their sites is a nice gesture, but the link must be validated manually if you wish to be sure to avoid any penalties for linking to bad neighborhoods. Using the link-condom you can easily avoid any dangers, let your users link whereever they want. The link-condom is easy to put on, insert it into the link you want and let the traffic in and out (ok, usually it just flows out; and if your content is not hot and strong enough, the link won't last a minute before being used).
Not only are link-condoms important for user-generated content, they are also a required machine-readable tag for paid links. You know what I'm talking about, don't act so innocent.