Jeremy Wright reviews some of the web-based backup solutions in Web-based Backup Solutions: Which One Is Right for You?:
This article examines two aspects to online backups. The first are “traditional” backup solutions brought to the online world. These solutions enable users to back up specific files or their entire hard drives to online services. The second is a growing tendency by users to put a staggering amount of information “in the cloud.” Information such as bookmarks (del.icio.us), photos (Flickr), and email (Gmail) are discussed.
In fact, many smart users are turning to a balance between the two worlds: keeping backups of their daily information such as email and bookmarks on Gmail and delicious while backing up their hard drives in case of catastrophic events. This balance enables users to be both mobile and confident that they will never again lose a major presentation just because their two-year-old thought their laptop was thirsty.
It’s a well-written article, worth a look.