> Although the company emphasizes that Pocket and Telefonica didn’t pay for placement in the Firefox browser, Mozilla Corp. chief legal and business officer Denelle Dixon-Thayer told WIRED that Mozilla has revenue sharing arrangements with both companies.

http://www.wired.com/2015/12/mozilla-is-flailing-when-the-we...

Can you explain what the revenue sharing agreement is, especially after so many Mozilla employees have vehemently denied that Mozilla got money from Pocket for the tie-up?