Is anyone doing view-through attribution?

Snowplow is obviously great for click-through attribution. I’m thinking about how to implement view-through attribution. Is anyone doing view-through attribution, and if so, could you describe your setup? I’m less interested in the attribution model than I am in how you are tracking ad impressions.

This post describes how to track ad impressions, but I can’t tell if either of these options would work with our primary channels (Facebook, Twitter, Google Display).

Thanks!

Edit: This link makes me think that impression tracking is not going to be easy with Facebook.

@dweitzenfeld - I know of a number of companies that are tracking impressions in this way on DFP. I’m pretty confident that the same approach would work with DFA but do let us know how you go. Would love to hear from other users who’ve got impression tracking up and running in different environments!