We recently made some improvements to Question Following. The first is the ability to see which questions you are following. If you click "My Account" there is now a tab that says "Questions You Follow", in the "Favorites" tab. Many users have requested the ability to "bookmark" a question in the past. We hope that this feature helps with that!
Also, you can now see how many users are following a question. When viewing a question, it will have a number next to the follow button. That number indicates how many users are following that question. For example, my friend Tim recently wrote the question What is the fastest animal?. As of this writing, it has 3 followers.