And..... I still do not get it.....
The user provide surplus storage and rent it into a cloud for other people to use?
What type of redundancy is built into this technology? I get the decentralization part, but still confused...
Correct, @Kprawn, Storj farmers will make available unused space on their hard drives to the network using the DriveShare app. They can offer this space for rent to other users who will pay the farmers for the space they want to occupy with the SJCX token.
The users of the network will be able to choose their preferred level of redundancy in the MetaDisk app, however, for simple data storage, a minimum 3x redundancy is recommended. As @brandoff already pointed out, you can find all the technical details in the Storj whitepaper recently published at
http://storj.io/storj.pdf, and specifics about the subject of redundancy in chapter 4: "Proof-of-Redundancy"
Having to have your data stored multiple times (being redundant) means that the overall cost of storing via the service will be many times more expensive as advertised.
One issue of redundancy does not address is data integrity and possible data corruption. The integrity is somewhat addressed by the fact that you check the SHA hash of your files, however you will likely not determine if data is corrupted until you actually try to make a query from it