The Hipihi prim system is very much like the Linden Lab system. So much alike that it makes one realise that there is much to be gained by creating a common standard for prims, a common, public definition that would enable prim based object designs created in one virtual world to be used in any other virtual world that uses the portable prim format.
Hipihi and Linden Lab both say they want to see a 3D internet. The internet and www are possible because of common standards that allow data to shared and used efficiently. Both companies should demonstrate their commitment to their stated ideals by working to create a common prim definition that would allow prim designs created in one world to be used in the other, and make this portable prim format public, for use by other virtual worlds in the making.