Firefox 2 now has support for external RSS subscriptions instead of stupid Live Bookmarks. This means I can use my favorite reader Netvibes whenever I see the happy little orange icon in my address bar.
Update: With the release of Firefox v2.0 this week, you can now customize your feed subscription engine. Netvibes is not one of the choices, but this post on the Netvibes blog shows you how to set it up.
I got my invitation to Flock. I have installed it, but I don't have time to check it out just yet. I will be posting my report along with some news soon.
See for yourself. My friend Pope wanted to do something like this a while ago. You open a socket between the two windows so they can talk to each other.