Nice post showing trends in online ad spend vs. offline.
Put differently, U.S. advertising revenue at all 19 companies increased 8% year over year in Q2, to $13.8 billion ($55 billion annualized). The online portion of this pie grew from $3 billion to $4.2 billion (23% share to 30% share). The offline portion, meanwhile, shrank from $9.9 billion to $9.6 billion (77% share to 70% share). The online companies, in other words, picked up 7 percentage points of market share in a single year.