Fotolia.com is an online marketplace where users can buy and sell stock photos. Thousands of photos are available for purchase at various price points depending on the number of downloads. The Wikilia section contributes photography knowledge. It solves problems for both buyers and sellers - sellers can earn money and gain exposure, while buyers have a huge selection of photos for both personal and professional use. Fotolia makes money through commissions on each photo purchased, with the amount depending on download numbers. It also partners with other companies. This business model could potentially be applied to the music industry by allowing unknown artists exposure and sales while providing music options for companies.

1. Fotolia.com