Rated 2 out of 5 stars

Bug: Click icon to disable RefControl (you see red X) -> restart browser -> you see icon without red X (extension should work) -> RefControl NOT WORK

I also see lot of exceptions from refcontrol in browser console:

[Exception... "Component returned failure code: 0x804b000a (NS_ERROR_MALFORMED_URI) [nsIURI.spec]"...

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