Rated 4 out of 5 stars

Cool but a fork of your add-on has added more services :
https://addons.mozilla.org/en-US/firefox/addon/long-url-please-mod/

Maybe you could work together and help humanity by adding "adf.ly" to the list. ;)

This review is for a previous version of the add-on (0.4.4.1-signed.1-signed).