Too Long; Didn't Read
Tokens are an interesting phenomenon brought on by the development of smart contracts on the blockchain. Many startups have opted to ICO, raising funds in the form of cryptocurrencies rather than raising dollars from angel investors or venture capital. They’ve done this because its far easier in that they don’t have to follow legal regulation, and because its easy to get rich quick as speculator demand for risky investments is high. You don’t even need to have a good idea or product to have your token highly valued and traded (see Spankcoin, Dentacoin). As time goes on I think we will see more token offerings for hardware projects (like Kickstarter) and non-blockchain related businesses. I believe that in the future, many apps and virtual economies will implement token offerings, whether it is in the form of their own virtual currency, rewards program, or shares in their business.