wishlist for Twitter lists and hashtags

sending @messages to Lists?, Info page for each list, @messages to #tags rather than users, following #tags rather than just users...

Twitter recently added lists as a feature to enable users to group tweets from selected persons for a specific purpose. For instance, my interests are in technology, publishing, sports and travel. It obviously helps if I can, at times, 'listen' to a subset of tweets from friends who fit one of the above interest areas. Also, others can then follow one of my lists, as they find a group of persons which fit a context.