Other Random Links
Random pages based on databases
These are generally poor sources of random links. The links have to be entered by users and are stored in the database indefinately. There is a good chance that the links get old and become unavailable. These are all pages based on databases:
The Yahoo! and DMOZ (Open Directory Project) random links use a very large database and they are updated and maintained by Yahoo and Netscape, respectively. The problem is that not all sites are accepted. The upside is that it is more probable to find a quality website since they are all screened.
Random pages that use the Yahoo random link
Random pages based on the Google database archive
These are pages that I can't classify, or do weird things.