New commenting system

In an effort to make discussions and commenting here easier and reduce how much spam I have to sift through, I have implemented a new system using Disqus. You can now reply to other users comments and post media (e.g. a YouTube link).  Also you can login to make comments using your Facebook or Twitter accounts.  The goal here is urge more discussions and move to a more powerful system. Email me any questions or concerns you may have.