Once more, yesterday's Dropbox authentication bug shows a fundamental weakness of centralized services. Dropbox is just a high profile example, but the underlying problem is that of unneeded centralisation. Every teenager who starts using facebook is told how important it is to wisely choose what to put online and what not, and always be aware that nothing published on the internet can ever be completely deleted any more. However, the way popular "cloud" services are built today unfortunately ju More