Google rocks

Yesterday Google's stock went up some 8% after the earnings call for the fourth quarter of last year. The media talk about Google's progress in mobile advertising (see, for example, a Reuters report here). This explanation is a bit ambitious as it is not clear how much of the spectacular growth in revenues compared to last year came from mobile. What is true is that it vastly compensated for the (slowing) decline in advertising rates. This could be a sign that mobile rates are stabilizing but not a sure thing. Clearly though, Google rocks.