In case anyone is curious, a couple of the key use cases for the tracking pixels are: 1. Tracking ad frequency and performance (e..g, did you buy something aft

In case anyone is curious, a couple of the key use cases for the tracking pixels are: 1. Tracking ad frequency and performance (e..g, did you buy something after you saw an ad; don't show you more than X ads for a given product) 2. ID synchronization between ad exchanges, ad buyers, and data targeters 3. Retargeting (e.g., showing you an ad after you've been to a site) 4. 3rd party data: things like guessing whether you're interested in cars or ceramic figurines and selling the ability to target you with ads 5. Site performance data (omniture, google analytics etc)