Contextual advertising
Implementing analytics for contextual advertising in helps track payback and optimize budgets.
Google AdWords
Keyword analysis for contextual advertising by helps to increase CTR and reduce customer acquisition costs.

Yahoo ads
Optimization of advertising campaigns in Yahoo Ads reduces the cost of attracting customers and increases conversion.
Yandex Direct
The audit of Yandex Direct identifies weaknesses, optimizes ads and increases the return on advertising.