I'm not a specialist, but you can start by researching how the Opera company makes money. It would seem to me a possible future "catch" would be that they could

I'm not a specialist, but you can start by researching how the Opera company makes money. It would seem to me a possible future "catch" would be that they could charge selected advertisers to let their ads through... From their own FAQ: http://www.operasoftware.com/press/faq http://www.operasoftware.com/press/faq "How Opera makes money" Opera provides cloud-based mobile services and solutions to operators, publishers and advertisers and enables hundreds of millions of consumers, via the Company's global cloud infrastructure, to connect to the internet content and services that matter most to them. Along those lines, Opera has different revenue models, depending on the customer type: *Operators.* Opera's revenue sources from this hosted solution include active user fees, data fees, NRE/development fees, hosting services, advertising and maintenance, and support. *Mobile consumers* (via partnerships with search providers and advertisers). The primary driver of mobile consumer revenue is revenue from mobile search, the Opera Mobile Store and active user growth. *Mobile publishers and advertisers.* Revenue comes from Opera's mobile advertising services and technology solutions, offered to premium and performance advertisers, ad agencies, publishers and developers. *Device OEMs.* Revenue comes through license agreements with a wide range of consumer-electronic-device OEMs. *Desktop consumers.* Revenue comes primarily from search and e-commerce partnerships.