Do not work ... Rated 1 out of 5 stars

Don't work with FF 3.0.5 an my migrations to the new Feedburner-Account.

Look this doc:
http://code.google.com/intl/de-DE/apis/feedburner/awareness_api.html

new Google.com API-URL:
Servers and Ports - HTTPS

Note that the Awareness API is only available via HTTPS, on port 443. An example URL for accessing the awareness API would be https://feedburner.google.com/api/awareness/1.0/GetFeedData?uri=blogspot/tuAm

This review is for a previous version of the add-on (1.3).