In a similar vein, I'm noticing more and more social sites implement their own site-specific chat frameworks, as well as notifications (I'm looking at you faceb

In a similar vein, I'm noticing more and more social sites implement their own site-specific chat frameworks, as well as notifications (I'm looking at you facebook and gmail). We went through this once with icq/aim/msn, and it would be nice if browser vendors got together and worked out something that unified 'push' messaging before everyone implemented it separately.