Thanks from Isaac, I saw FirefoxMozilla Lab’s alpha 0.1 prototype: Ubiquity.
Ubiquity for Firefox from Aza Raskin on Vimeo.
I do think this kind of service should be supported from two sides: one is from server’s side, the other is from client’s side. While web 2.0 adding too much weight on the server sides’ magic solutions, current one is a huge step forward from the client’s side (web client). Good job, Mozilla!
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