Intead of using foauth.org, you can use this project to host your own proxy service for free on Heroku. It requires more initial configuration, but you get all the benefits, and you can be in complete control of your user account and authorizations.
Clone the repository.
$ git clone https://github.com/foauth/oauth-proxy
$ cd oauth-proxy
Create a Heroku app.
$ heroku create
$ git push heroku master
The remainder of the instructions are presented contextually within the app itself. Just open it in your browser and follow along. Refresh the page after each step to make sure you've completed it.
$ heroku open