is it possible to track if a connected fb user has shared something to their wall ?

I'm looking into my options and wondering if a user clicks to share something or invite friends etc... that kind of activity... is there any data that can be recorded so drupal knows the user did that ?
I assume I could do something with javasript onclick but I thought there might be a better way using fb connect ?

Any info is appreciated.
Thanks.
-J

There is an extended

There is an extended permission which allows an app to read from a user's wall. With that you might be able to write something to inspect the wall for a particular link.

Or an FQL query might work even better. With that you might be able to filter for posts connected specifically to your app. I don't know off hand, but I'd try to look that up on facebook docs. Then, I'd try to build a quick and dirty prototype because quite often FQL queries to not work as documented. I wouldn't believe it actually works until seeing it work.