Mozilla/5.0 (X11; SunOS i86pc; rv:6.0) Gecko/20100101 Firefox/6.0 Steps to Perform: 1. Open http://people.mozilla.com/~myk/microsummaries/tests/install-generator.html and click the "Install Microsummary Generator" link. Expected Result: An Add Microsummary Generator dialog should appear asking you to confirm that you want to add a microsummary generator. The dialog should display the "source" (URL) of the microsummary. Actual Result: Nothing happen It works on FF4.0 and FF5.0
microsummaries has been removed in firefox 6 (bug 524091), they could be reimplemented in an add-on, provided someone is interested in doing so.