As a newbie, and from all I've observed here so far, I would say that, Inviting others to this wonderful platform is one of the best things anyone can do to others.
However, it shouldn't be majorly based on the rewards anyone would get from referring others, but for the benefits the invitees would derive for meaningfully engaging their time here and not waisting away on Facebook and the likes.
This is why I spend a lot of time to develop my blog to what would actually attract people to join us whenever I invite them.
Kudos Sir!