Sources: IgnitionOne [download page], The Search Agency [download page], ;RKG; [download page], Covario, Kenshoo
Notes: Various sources were in agreement that US paid search spending grew in Q2, as did click-through rates and overall clicks, although The Search Agency saw a drop in costs-per-click for its clients while IgnitionOne and RKG reported relatively small increases. Other studies similarly reported increases in global search spending, click-through rates and clicks, although impressions were down on a year-over-year basis.
Related: One-Third of US Organic Search Traffic Said to be Mobile
