• by Joe Mandese  @mp_joemandese, 4 hours ago

The U.S. ad market improved slightly in May, which expanded 4.4% over the same month a year earlier, according to just refreshed monthly data from Guideline's U.S. Ad Market Tracker.

While an improvement over April's 3.4% expansion, U.S. ad growth remains tepid and in line with recent forecast downgrades by big agency holding companies including IPG Mediabrands' Magna and WPP Media.