Considering the easy availability of images out there these days, it's nice to have a reliable and legal resource for stock photography in those situations when pulling pics from Tumblr, Flickr and Google Image Search isn't gonna fly. 123RF.com is a royalty-free microstock library for precisely that purpose—a comprehensive collection of multimedia assets, from photos, vector illustrations and logos to audio and video content. With over 20 million assets available and some 30,000 new materials added daily, 123RF.com is a one-stop shop for your stock photography needs.

Not only does 123RF.com offer 24/7 live customer support, they can also provide in-house photo retouching service if needed. As a digital-age photo agency, they also offer additional image research and discovery tools such as an iPad app and a new GeoRank-enhanced search engine that aims to bring localized content to the forefront.

Images start at just $0.21, and corporate pricing, discounts and flexible licensing is available for mass purchases. The token/credit system streamlines the purchasing system, and loyal customers receive rewards such as exclusive gifts and vouchers.