Wednesday, March 05, 2008 11:01:21 PM (GMT Standard Time, UTC+00:00)

I like this very much.

It's an Activity.

They are installed to the browser through a simple xml file, which tells IE8 what web service to call, and what parameters it expects. The rest 'just works'. No third party client-side code at all.

Select some text, hover over the button to get the content without ever leaving the page.

Check out that mad shit! 

Yes. Yes. Yes.