Walmart is getting the first tests off the ground that allow advertisers to use shopping data to target Vizio ads, according to three ad buyers who have either been briefed by Walmart or run early tests of Vizio ads.Walmart is getting the first tests off the ground that allow advertisers to use shopping data to target Vizio ads, according to three ad buyers who have either been briefed by Walmart or run early tests of Vizio ads. Read More