I use Dropbox, but only the free version. For bulkier data I am just rsync'ing to my linode, with exactly the same utility to me. It is quite telling that the d

I use Dropbox, but only the free version. For bulkier data I am just rsync'ing to my linode, with exactly the same utility to me. It is quite telling that the dropbox app uses librsync. In other words, the value to the consumer is in the simple, reliable interface and easy sharing. They have got this right where Jungledisk got it wrong. However, the value to investors is in the customer base and an implied CLV for those that pay offsetting the exponentially decaying cost of storage for those that don't. In other words, it's a Ponzi scheme for storage and they're betting on Moore's law. Unfortunately, it is almost trivial to reimplement their utility; any half-decent systems programmer will instantly grasp what they're doing. So I would not invest in Dropbox, but whilst they maintain some momentum I am happy to store low-value documents on their service.