No matter what I do, the data.target of a web intent share button for tweeting is always null. The docs say that it should be “A DOM node reference to an HTML element or IFRAME. This value will correspond to the original inciting DOM element. Use this value to differentiate between different intents or buttons on the same page” - https://dev.twitter.com/docs/intents/events
This feels like a bug to me.
Here’s example code: http://jsfiddle.net/Gy3Z9/1/