I just can't use a product associated with the name "GravityZoo." GravityZoo sounds too much like GravityGlue... which sounds too much like CavityGlue... which sounds just a little too close to CavityJew... which reminds me of the dentist (sorry for the anti-Semitism -- I needed this for the joke to work. I love you guys. Shalom!) Anyhoo, so... the dentist. I don't like the dentist, and so, logically, I don't like GravityZoo. QED.