Understanding Like-gate
The Open Graph examples given are: “Bob just watched a video on Socialcam” or “Jane just planned a trip on TripAdvisor”.
Even if Bob and Jane are my dearest friends, why should I care?  "A large percentage of them are related to ecommerce transactions."

This reminds me of a short lived startup called Blippy[1] that attempted to get people to automatically share their credit card purchases. They even got a not insignificant amount of people to share that info -- turns out it just didn't make for a compelling firehose.I would only care about Jane using TripAdvisor if I myself was planning a trip just then, Google works because there already exists an intent to purchase that they funnel to the highest bidder. Open Graph as presented by the OP will just be mostly noisy events from people that I happen to know.[1]http://en.wikipedia.org/wiki/Blippy