Yelp: 36 Per Cent of Ad Impressions from...
36 per cent of all ad impressions on local directory and reviews service Yelp came from mobile devices during Q1, 2013, in keeping with its quarterly results. That figure is up from 25 per cent in Q4, 2012 – an increase at the least partially accounted for by the introduction of in-app ads, which only came into play on the tail end of Q4. Dur...