i am creating a website that will intially have an invitation-only functionality. i.e. a user gets an invitation with a special url that they can use to sign up.
to login on the website i use facebook connect.
to send beta invitations, the user can see his facebook friends, and select which users he wants to send the special urls to (each user will get a different url).
the problem is that facebook have disabled the possibility to send messages to other users with facebook connect, the only way i found is the url to facebook with pre-composing a message, but (a) doesnt seem to work correctly (I could not pre-fill whom to send to), and (b) i do not want the user to leave my website, or at least that they stay come back to my website after sending the message.
as alternative, is it possible to use the invite functionality from facebook somehow for this (where a custom message is sent to each user) ? (please provide example for external websites, since so far I only seem to find examples for fb application on the facebook website)
if possiblty, i would like to use the api only (and no fb-tags) so that we can keep full control of the look-and-feel, but in worst case i would settle for some solution with fb-tags.