WikiTag is a search directory that helps users find relevant wikis (these are informational articles written by site users). WikiTag utilizes tag searching to help users locate wikis.
You can register your wiki with the site for free, and add the tags you want it to be under. Then when people search using those tags, your wiki will come up. Also Wikitag provides leaderboards to keep you up to date with happenings in the wikisphere, so you can see what are the most recently posted wikis, the most popular ones, or ones your friends recommended.
Wikitag.com In Their Own Words
WikiTag! is a collection of wikis, submitted and tagged by you. You can use WikiTag! to share your favorite wikis with friends and to discover wikis about anything.
WikiTag! is a product of Techrigy. We’re dedicated to helping the world utilize blogs, wikis, and other forms of social media. We’re also the creators of BlogBackupOnline and SM2, our enterprise social media management tool
Why Wikitag.com It Might Be A Killer
This is a smart way to let wiki-lovers find the wikis they need, and also promote their own work. It is a unique concept, as there are many search engines that link to wikis but not exclusively.
Some Questions About Wikitag.com
Right now searching for basic tags is only producing 3 or 4 results per page. It looks like the site needs to spread the word and do some development before it will be useful. 
