Dreamstime.com

From website:

Dreamstime is a distinguished leader in stock photography and a major supplier of high quality digital images at unbelievable prices. All stock images available are provided by Dreamstime community's photographers, shot on film or digital and approved by our editors. Structured on categories and subcategories, the database is renewed with thousands of fresh images and titles on a daily basis.

Dreamstime provides imagery to an infinite gamut of clients in the creative market from independent customers in the private sector to Fortune 500 companies (including the world's largest advertising agencies, national and international magazines, film and television production companies).

As of January 2012, Dreamstime numbers almost 4,500,000 registered members, more than 130,000 contributing photographers and over 13,000,000 images online. With unique visitors exceeding 11,000,000 monthly, the agency occupies the 3rd place in stock photography audience and image licensing worldwide. (December 2007 historical data: 500,000 registered members, 26,000 contributors, 2,000,000 images online and 4,000,000 unique views).

Starting with September 2006 Dreamstime is a member of PACA (Picture Archive Council of America), the trade association for stock agencies in United States and in October 2007 Dreamstime is the first community-based agency to be received as CEPIC (Coordination of European Picture Agencies Press Stock Heritage) member.

Online since 2000 as a Royalty-Free stock photography website, the Dreamstime concept has been constantly redesigned, upgraded and adapted to the market's needs, evolving into a powerful and active community-based site. Using the latest technologies on state of the art hardware and powerful servers, Dreamstime is technologically progressive yet simplistic in navigation, application and submission processes to ensure repeated visitings and returning business.