BrandPotion's a great example of how to crowdsource advertising. But there are interesting examples of how crowdsourcing's coming into play in other sectors. Here's one example of how crowdsourcing may revolutionise banking.

SWIFT, the Society for Worldwide Interbank Financial Transactions, is an organisation, handling 15 million financial transactions, on an average, for more than 8,000 banks around the world. The organisation works like a carrier of messages, instead of like a bank, and has an innovation department that's setting up a way for those in the field to find creative ways to make banking quicker and simpler.

The department at SWIFT has started Innotribe, a website that sources new, creative ideas for new products, services or processes from bankers around the world. Ideas range from the complex and game-changing (like eMe, an electronic security deposit box, or safe, where you can store data that'll help you make online payments and purchases) to the simple and evolutionary (like T-score, creating a trust passport based on scoring on social networks, similar to employers checking possible employees' reliability based on their social networks).