Check Your Permissions
Click the image below and you will be taken to a page where you can click on each individual link to each of the sites. Once there, you can check which apps you have given permission to access each of the sites. I was very very surprised at the number of apps I had allowed that I never use.
Eran Sandler @erans and Avi Charkham @aviche were the developers behind this great little tool.
