Not a scam, but you are more than welcome to have that opinion. The project is only around a year old. We are looking to get the word out there and give away free tokens for helping, mind you it costs ethereum to send out free tokens. In the next few months if all goes well we will have completed the primary functions of the application (users can mine blocks by discovering them in real world locations)

Scams tend to promise guranteed returns of a certain percentage when the investors store their tokens in a wallet.