Marketers also do not always know how syndicated paid - search ads are priced or placed across networks as well an anti-trust inquiry from the Federal Trade Commission .
Networks has led to lawsuits and protests against Google by competitors and advertisers .
Marketers also do not always know how syndicated paid - search ads are priced or placed across networks , which has led to lawsuits and protests against Google by competitors and advertisers , as well an anti-trust inquiry from the Federal Trade Commission .