So, the company gives you a 2TB external hard drive for free, on the condition that you use 1TB to store your own data and 1TB to store copies of other people's encrypted data? Sounds interesting, until you get a huge bill for bandwidth overage. I have barely 100GB of bandwidth to spare every month (out of a total of 300GB/mo), so if that hard drive gets filled in less than 10 months, we've got a problem. They're effectively pushing their costs onto ISPs, who in turn will push their costs onto customers. Restoring backups is also going to be pretty slow if your data is stored on somebody's 10M/1M DSL line. They'd better market it in countries where everyone has 100M and no bandwidth caps.