Groupon and google should start to offer a "NOW Deals" based on the the weather - this way if it rains and buissness are slow we can have google/groupon offer a wide" now" deal and drum up buissness based on the weather.

seeing how rainy days can easily be sources of slow buissness for owners - make this predictable experience one where google/groupon can help improve buissness by developing "raininy day" habits amoungst consumers.