Using the blockchain to store data has already been attempted by Datacoin and it was pretty much a failure. Storj intends to store entries in a blockchain but will host the actual files off-blockchain. This is a smart move and is probably the only feasible method of getting past the blockchain bloating problem which is what killed DTC. Unfortunately, this means that many of the benefits of the blockchain such as infinite redundancy are also lost.
This is just the beginning of what services can the blockchain provide for us... The blockchain by itself is as big or bigger than Bitcoin, and the technology will probably prevail longer than the coin
Nice article
no "coin" (value), no secure blockchain.
By "coin", I'm guessing he meant Bitcoin. Both Storj and Ethereum have their own "coin" currencies independent of Bitcoin. I'm not sure about the other two but there are altcoins that have already implemented some sort of voting feature - e.g. BitShares, Qora, and NXT just to name a few.