Also in the report (which can be downloaded in full here):
Spending in Q1 dropped slightly — by 5% — compared to the fourth quarter of 2013.
Cost per click rates increased 10% from the fourth quarter, likely due to increased competition for targeted audiences and content in the News Feed, leading to a spike in demand.
Impressions were down 17% QOQ and 48% YOY, showing there are fewer but higher value impressions.
App discovery continues to be a priority for app developers. Mobile app install ads were the most popular mobile ad unit capturing 74% of mobile ad spending.
Advertisers have shifted their focus to the News Feed with 81% of desktop ad spending allocated to News Feed ad units.
47% of desktop spending went to unpublished page post link ads (which don’t appear in pages’ organic feeds) and such ads had a 200% better …