Comment What about MPEG4 and .X3D? (Score 1) 102
Check out: http://sdk.web3d.org/resources/mpeg-4/index.html (the multiuser .zip is interesting) and http://sdk.web3d.org for some interesting tidbits. Seems MPEG4 also incorporates specs for the streaming of virtual worlds, while I am under the impression VRML is being phased into the .X3D format...