Google missed its earnings mark today, which it is already blaming on spending so much damn money on Nest. But there were a couple of worrying ad trends were evident that the company hasn’t been able to shake for some time now. The average cost-per-click was flat on Q4 2013 and nine percent lower than it was one year ago. Google hasn’t seen an increase in the average cost-per-click since the Q3 2011. [Source: AdAge]