Usecase: Invite a friend
Usability
- Get FOAF (resp. Find a friend)
- Select this friend from the "address book"
- Click on the invite widget
Protocol
TBD: How can we avoid spam? I would suggested via a "trust server"!
- Get profile of friend and hence get friend's provider server
- Get from friend's provider server the FOAF introspection (resp. the invite URL)
- Send your profile to friend's provider invitation URL
- Friend's provider server will contact "trust server" with your profile
- If "trust server" acknowledges your profile as being trustworthy then your friend's provider server will contact your friend by forwarding your profile

