It's certainly different from an AirBNB posting in that it can be used by an unlimited number of people in variety of geographic regions, giving it much broader

It's certainly different from an AirBNB posting in that it can be used by an unlimited number of people in variety of geographic regions, giving it much broader appeal. It's often the way I realize a new bundle is out, which triggers me to go buy it. Of course, the emails humble bundle sends out could also fill that purpose, so it's debatable whether that's a good reason. I guess the only other reason is to see people's opinions of the games. I find that useful, but I could also see that it might be more appropriate for other forums.