What I don't understand is why Google doesn't go a layer up from this and aggregate across the many deal sites. Outside of the US, the clones are the leaders in

What I don't understand is why Google doesn't go a layer up from this and aggregate across the many deal sites. Outside of the US, the clones are the leaders in the space. Google could work to provide search across the multiple deal providers, provide custom alerts when particular products and services become available (just imagine the value of knowing which items a person is watching to see when they go on sale!). Google Deals could be much more powerful than a single site app like Groupon. Buying Groupon, especially at the rumored prices, is a weak move. Incidentally, I signed up for the service and unsubscribed after two days. It's of zero interest to me to have irrelevant garbage deals pushed at me, so maybe I am missing some key spam/bacn tolerance level needed to grok it.