Rated 5 out of 5 stars

Great extension. Very useful. I would love the Test Status column to contain the test result in ms so I could find the fastest good link also.

This review is for a previous version of the add-on (0.7.1). 

Added feature!

I added this feature, you can now see test results in milliseconds if you enable it in the preferences (Tools->LinkSidebar Preferences->Testing).