1. When I can "Invite people to suggest places and times by sharing this url with them" it would be great if there was some kind of pre-populated email that could be send that contained a blurb about the meetup and some info on how they would use the link they have been sent.
2. When I return to the site as someone who has been invited it is not immediately clear if I need to do anything, maybe a big "Yeah, I'll attend" button?
3. Could the meetup page show who has been invited and who is attending?