Not sure if this is a multi-site or Invite Anyone issue, but when I invites someone their default role is subscriber. I would like to change that to contributor or author. Normally default role is set on Settings-General from the admin panel, but it's not there, possible because I have turned user registrations off to stop spammers and now use Invite Anyone as my way of getting users to get their friends on the site. Any suggestions? Thanks in advance for your advice.