There must be sufficient content on the site to merit a listing. Sites with no apparent activity will not be listed.
Interactive humor is still in its infancy, as the web design tools get more sophisticated, web site developers will be able to produce some real funny and interactive media, to keep us smiling. Talking about smiling one of the newest developments in this field is a markup language called SMIL (Synchronized Multimedia Integration Language.
I will try to keep you posted on new developments, so come back often, and don't forget to SMILE :)