For me, this service is one of the best for placing contextual advertising. I found many positive reviews about it. The moderation here is indeed thorough. Prohibited topics simply do not get through; only verified ads are shown on Yandex, both text and banner. Changes to bids and other metrics occur within 30 minutes. Throughout my time using it, I have been completely satisfied. If companies could get through moderation faster, it would be just perfect.