Great addon Rated 5 out of 5 stars
I have use it some year ago and now i have re-found it and it works again with my new Firefox: great! I have a suggestion: Why you don't add a bitcoin address within your addon? I have some bitcoin and it is very simple to donate "what you want" to you.
Maybe Mozilla term of service don't allow bitcoin but you can insert the address within the addon, for example in the top of the preferences window. By the way tanks very much.