Guest Who?
The Gemara (Shevuos 35b) says that having guests is a tremendous mitzvah. On the topic of guests, I like to relate the following incident: When I was a bachur, I was frequently invited to various homes for Shabbos meals.
Chesed
Who Counts as a Guest for Hachnasas Orchim
Which guests qualify for the mitzvah of hachnasas orchim, such as out-of-town visitors, students far from home or lonely people.