What caught my eye was Brad's opening comment:
Hospitality is not optional for Christians, nor is it limited to those who are specially gifted for it. It is, instead, a necessary practice in the community of faith. . . . Several aspects of early Christian life combined to make hospitality central to Christian practice.
I remember Simon Jones talking about hospitality on his blog recently too. You can find Simon's blog in the sidebar. If you search his blog for hospitality you'll find several posts with interesting thoughts to ponder.