Burst coin is one of the first cryptocurrencies to be mined using a HDD(Hard disk Drive)using space, keep in mind the higher the capacity of the HDD the more Burst you will make.
You may be thinking what? Yes Burst coin is different to all the other cryptocurrencies out there because it does not require a CPU or GPU to mine the coin. See that is where the advantage comes in because it's energy efficient, they are using military-grade cryptography to make sure you are secured when mining, as well as your wallet. Burst is ruled by the users of the network therefore it can't be altered by governments or financial institutions.
Burst has so many advantages such as instant transaction's and no fees, but what is great is for every new user you help improve the transactional capacity of the network.
Maybe Burst is not for everyone, but if you have a few hard drives laying around why not use them and start mining to make an income with hard drive space, I mean it is worth a shot!
Be sure to check it out @ http://www.burst-coin.org/