Knowing when someone shared your page

Three major players

I usually focus on the three major players in the social media arena. Facebook, Twitter, and Google+. Sorry to all of the other players like LinkedIn, etc.

How to track who shared your page(s)

On each page where you have the Facebook like, Twitter tweetbox, and Google Plus's +1 button, simply subscribe to the callbacks specific to each environment.

• Facebook: subscribe to the edge.create event
• Twitter: put a callback on the onTweet parameter
• Google+: put a callback on the callback parameter

Then in your callback functions, just AJAX whatever you want back to your server for it to store. :)

Happy Coding!