I don't know, but the person that mentioned it said that the zencart.com site needed updating, but it seems like all the links go to zen-cart.com
Could be an ownership issue,
could be inner team politics (not that is such a thing)
could be my misunderstanding of the zentuation.
Onlyblue, why are you trying to use Zen Cart as a keyword? Making templates or hosting?
Zen Cart is the proper name, but keep in mind that many people will type zencart in a search field.
I would suggest going to google adwords and trying all the various combinations to see which name gets the most searches.
For instance, birdhouse is the proper spelling, but most people search for bird house so I made sure I have that keyword, and the word bird house somewhere on the site so it get's picked up.