I think Unite suffered from not being open enough. You required an Opera account to use it, and there's no open specification for building compatible tools and

I think Unite suffered from not being open enough. You required an Opera account to use it, and there's no open specification for building compatible tools and services. What you could build into the browser itself was quite limited. (Plus you had to leave the browser open all the time, which can be a pain.) There's some recent proposals for p2p web standards (http://www.infotales.com/peer-to-peer-web-standards-by-world-wide-web-consortium/ http://www.infotales.com/peer-to-peer-web-standards-by-world...) which may provide an alternative system to Unite with some of the same goals. Opera appear to be involved in it.