As I have argued before, we use really poor definitions of religion quite frequently, unfortunately often posing religion as quite different from and the enemy to authentic spirituality. This is a dichotomoy that should not exist, along the same lines as spirituality and psychology and religion and science.
In any case, this is an interesting article looking at the definition of religion in a way I haven't really considered it before. While I have advocated for broadening the definition of religion, this author argues broadening it in a different way. It echoes some observations about the more communal versus individualistic traditions.