I don't understand the increasingly negative attitudes people are having towards services like Dropbox. People who don't encrypt their personal files before sending them off to a public, shared server clearly want their data to be read in the clear, so who cares?
Yes, I'm being a little tongue in cheek ;). While I lament the fact some people are so blasé and loose with their data, the fact Dropbox doesn't automatically encrypt files for their users is a bit worrying. We've also known for a couple of weeks that allegedly their login system leaves a lot to be desired, but then again if you personally encrypted your data before uploading, you'd be fine anyway.
All cloud services have potential, you just have to be smart in the way you use them and recognise their weaknesses.