He said that ad buyers currently expect steady or slightly higher total dollar-volume growth.

WSJ: Signals Weak for TV-Ad Market

Mobile ad spend share for all iOS devices increased slightly to over 75% in March.

FORBES: Apple's iOS Mobile Ad Metrics Dominates Android

It is of course ever so slightly embarrassing that the bug should manifest itself just as Apple launches an ad campaign featuring the function.

FORBES: Links 3 Jan: Apple's Do Not Disturb Bug Is A Self Fixing Unix Problem This Year But It Will Reappear Next

Its TV Globo network--the world's fifth largest in terms of audience--claims slightly more than half of the Brazilian audience but 77% of television ad revenues.

FORBES: Brazil's TV Titans