I have an event on Facebook, generally it's shared to around 400 people and then people share further.
How can I track which user shares the most? I have seen answers for apps but I can't see the URL modifier which allows me to see who's invited whom to the event. On the main Facebook page, if you hover over someones name it tells you who invited them so Facebook must keep a record of this.
What about using FQL?
This query will get you the list of inviters for each invited user:
SELECT inviter, uid FROM event_member WHERE eid = <event_id> and inviter
You can use this query as basis. Order by inviter and count the records for each inviter. I know there's some work to do there, but I guess with a little bit of twicking the query, you'll be able to do it.
来源：https://stackoverflow.com/questions/12357698/facebook-invites-whos-invited-whom