   So your initial proposal is something like this:    Clay Products   |-Ceramic Technology      |      |-Pottery      |-Space Age Ceramics   |-Ceramic Art      |      |-Hand Built      |-Wheel Thrown  Other areas I've been concerned about: * industrial clay/ceramics products * clay/ceramic techniques and methods * cultural clay/ceramic history * technical clay/ceramic history * clay related tools and ingredients * well known clay artisens  And I'm sure there are plenty more.  A list of all the existing clay related articles would be a good beginning.  Comments welcome.   