Why Have Internet Directories Become So Popular?
Inbound links can greatly increase the search engine rankings of a web site if the links contain the right keywords and if the links come from related web pages.
Usually, the category pages on an Internet directory like The Open Directory or Go Guides or Skaffe are considered related web pages if your web site fits in the selected category. That means that links from Internet directories can have a very positive effect on the search engine rankings of your web site. They’re one of the first places we work on for inbound links to our clients.
[Update: As of September, 2017, The Open Directory was closed.]