On one hand I can understand Google’s aggressive interest in Groupon. Groupon appears to be one of the few companies that has cracked the code on making money from local businesses. Groupon’s revenues are rumored to be around $50 million per month, which is impressive. But there are at least two fundamental compatibility problems. First, Groupon is a feet on the street business employing over 3,000 people globally. So at $600 million in annual revenues, that amounts to only $200,000 of annual...