In my opinion I think there is a reason why @amr008 has not used @misterengagement. He wants the user to specifically use https://www.sportstalksocial.com when posting SPORTS comments. This will help the community in two ways:

1. Increase ad revenue for the community (the recent proposal allows the community to decide what to do with it).
2. Help SportsTalkSocial become higher ranked on the list of sites people visit. This will help SPORTS have a wider reach and hopefully onboard more users.

All of this is just my opinion. There may be a few more things @amr008 may want to add.