I don't understand what is Google waiting for to make an algorithm-based sef-served Groupon. Like they changed advertisement with AdWords/AdSense. They have the brand and advertising network and hundreds of millions of users.
Perhaps Google as an organization is too asperger-like and can't understand social? I don't know. But it looks like a big opportunity being lost.
I'm not sure I follow what you're saying. How can you make daily deals algorithm based? They rely on third parties (merchants) agreeing to the promotions. Anything algorithm based would have to know enough about those merchants to make coupon decisions on their behalf, and be trusted to do so. I have a hard time seeing merchants in quantity going for this.
They could use algorithms to implement a 'dating' site that matches companies to potential customers. "Hey, we can bring you 10000 university educated males who recently divorced and do not buy your stuff yet. If you offer them X, our algorithms predict 25% will buy, and 45% of them will become repeat customers."
I do not see why Google would have to include a coupon in such an offer, though. If they have the tech to do this, and, given the privacy concerns, dare to use it, they already can sell targeted ads. Coupons, IMO, only serve to attract less well-off customers, that typically are worth less.
Perhaps Google as an organization is too asperger-like and can't understand social? I don't know. But it looks like a big opportunity being lost.