Funnily enough, I did work on a dashboard for doing cross platform ad tracking for a few years, called Refined Ads. It was bought by VisualIQ, which in turn was bought up by Nielsen. One of a few products that helped manage ad campaigns across Google, Facebook, and so on. Twitter was the hardest nut to crack.
Which in the end hurt Twitter, I suspect, as marketers were truly interested in if a conversion happened because the visitor saw only one ad, or ads across multiple platforms, and so on. Not just to drive conversions, but also to stop wasting money on ads that were contra productive.
