Email updates are now enabled

Iv'e added a link to the right hand side of the blog, if you prefer to receive new posts by email.  Our posting times are sporadic, so we thought this may be an easy way to get the same updates out to folks and to keep people from having to constantly check back to the blog.  If you subscribe, you will get an email once a day with all of the posts for the day (I think that is the way it works, if not just let me know in the comments).