Snapchat opens a private marketplace for brands to buy ads in Discover showsSnapchat has developed a private marketplace for advertisers that could help publishers on the platform sell commercials directly to brands and raise the value of the ad inventory. On Wednesday, Snapchat said advertisers are now able to book ad space in specific shows and channels created by publishing partners, including Hearst, Vice, BuzzFeed, NBC Universal, ESPN and others, through its self-ser
