PubMatic co-founder says social networks, entertainment sites were hit hardest PubMatic, a provider of ad-management services for publishers, on Tuesday released its AdPrice Index, which showed a steep month-over-month drop in online advertising in July. "Clearly, we're seeing the slowdown in the offline economy catching up in the online economy," said Rajeev Goel, co-founder and General Manager of PubMatic. PubMatic provides real-time ad network optimization so that publishers can manage the ads that appear on their site from multiple advertising networks. PubMatic serves billions of ad impressions provided by the more than 150 ad networks it works with. "The declines vary by vertical," said Rajeev. Across Pubmatic's network of 4,000 publishers, the drops are anywhere between 12 percent and 20 percent, depending on the vertical, he said. The verticals that were ... [ Read more ]