What are tags? A tag is the modern equivalent of a label. It is just a word or a phrase that a person uses to label something. Tagtionary is a project that collects tags for words just like dictionaries collect definitions for words. For instance, the word "Red" can get tagged with "rose","love","blood","communism"...
The interesting part of tagging is that it is freeform and with enough tags, the true meaning of words and our language can be seen. Anyone can contribute to tagtionary and every tag makes tagtionary more accurate, so please contribute.
Tagtionary went live on September 14, 2008. It is maintained by Alex Levin and Unicow Inc. Feel free to drop us a note.