Smartphones and tablets are taking a greater and greater share of overall advertising spending.
In the US, mobile is now taking 16.3 percent of search advertising spending, according to Q3 2012 report by IgnitionOne — up from 14 percent the previous quarter. However:
Even search advertising to tablet users, which had comprised 60 percent of mobile search ad spending in Q2, fell to 52.2 percent.
Does this point to a wider problem with mobile advertising? IgnitionOne points instead to economic factors: