promotion possibilities available with Web rings

Web rings are a growing service on the Internet, providing one of
the easiest ways for visitors to navigate the Internet. In each of its tens
of thousands of topic-specific rings, member Web sites have linked their
sites together, thus permitting more targeted visitors to reach the joined
sites quickly and easily.
Are web rings an effective alternative to search engines and directories?

 

I don't think so. Webrings are from the 90's.