After reading about MARC and feeling really confused as to how to read and understand MARC records, I found this article to be very enjoyable. I think it is really important to have a standard way to share bibliographic information between libraries. However, it seems MARC is unnecessarily complicated and outdated.
I am interested to learn more about the newer methods, such as XML, that Tennant mentioned in his article. A simpler and more user-friendly method would serve users well.