Potencially harmfull Rated 1 out of 5 stars

I consider this extension potencially harfull to your data and confidentiality of your credentials.
This extension is sending your URLs to some machine in Amazon cloud.
http://bleed-1161785939.us-east-1.elb.amazonaws.com/bleed/www.example.com%3A8004
It is not clear what is happening with the data then.
It can be potencially used to harvest your data straight after you log-in to vulnerable site after you have been told the site is clean.
This is only about the trust - how much you believe the one who is running the no-name machine in the cloud.

Best regards
Michal Ambroz

This review is for a previous version of the add-on (0.1). 

It does not send URLs. It sends hostnames, which in general can not be used to harvest data other than what hostnames a particular public IP has visited. If it bothers you, feel free to uninstall it.