She says that new mail client has fewer ads but higher click through rates.

FORBES: Yahoo Sales, Profit Tops Analysts' Estimates, Shares Rise (Live)

Overall, Kaminski says client investment in mobile ads is up 90% this year, comprising up to 8% of the total.

FORBES: Advertising Experts: Ignore Google's Earnings, It's Doing Just Fine

Mr. MARK KRIKORIAN (Center for Immigration Studies): The attorneys have gotten very good at crafting ads that apply to no one but the person their client wants to hire and then place them in papers that almost no one will ever see anyway.

NPR: Critics: High-Tech Visas Cheat U.S. Workers

In the future, the company plans to incorporate advertisers for "client immersion sessions, " said Gokul Rajaram, Facebook's product director for ads.

WSJ: The Facebook IPO, One Year Later

The client, as brand owner, will bear the majority of the cost of developing the ads, so the profits would be divvied accordingly.

FORBES: The Law Of Unintended Consequences: Why Agencies Have No Incentive To Come Up With Big Ideas