The crowdsourcing is an incredible tool, we can use it to outsource our needs to a group of professionals that will bring us a cheaper solution either keeping or increasing the quality.
Guerra Creativa [ http://www.guerra-creativa.com ] is a crowdsourcing platform where everyone can access to a growing community of designers. They will battle to design the best logos, websites, stationary designs and other kind of graphic material. GC (Guerra Creativa) brings the chance to interact with people from all over the world, and mostly from Latin America, creating contests where the Contest Holder decides the prize.
If you are looking to redesign your website, get a logo for your company or just create a customed christmas card, you will only need to name your price and watch designers compete for your work. Finally you choose the best design among lots of different proposals.