The most obvious example of gamification would be the mayor status feature in Four Square, where you are rewarded for checking into certain locations by businesses. Nike+ has allowed the company to build a huge and active fan base. For example, over 800,000 runners logged on and signed up when Nike sponsored a 10K race simultaneously across 25 cities.
Marketing companies are quickly learning that by deconstructing how we respond to fun and being rewarded that they might be able to change the potential customer’s behaviour to increase both sales and loyalty. Creepy right?