Tagal.us lets you set a hashtag definition via Twitter. users can vote on definitions and decide which best describes a particular hashtag.
Tagalus (@tagalus) lets you use Twitter to get and set definitions. There are currently two commands that @tagalus understands:
* Define: You can ask Tagalus to define a term for you. Example:
@tagalus_user: @tagalus define ip4
@tagalus: @tagalus_user ip4 = Ignite Portland 4 - a "hipster event" according to KGW
* Define ____ as: You can also set definitions using Twitter. Example:
@tagalus_user: @tagalus define mynewtag as a new tag that describes everything about me
@tagalus: @tagalus_user http://tagal.us/tag/mynewtag