Although I could have used the Twitter widget's code (didn't notice until I was done), I decided to try out XML to Linq. Therefore, you will need to update your Web.Config to .Net 3.5. However, future updates will remove that requirement due to BlogEngine.Net's current dependency on .Net 2.0. Read on to find out how to install my widget.
http://www.google.com/reader/public/atom/user%2F[userid]%2Fstate%2Fcom.google%2Fbroadcast
Let me know if you have any issues or successes.