They merged online backup, online storage and file sharing services into one product.

If you try this service you will notice that (contrary to most competitors):
- You can access your files in (true) real time with a web browser
- They really offer 250 GB (some competitors offer a fake unlimited web
space, they say “fair use”)
- You can share a file or many files with the 1-click-share functionality
- Some of your files will be uploaded very very fast (turboupload)
- The service and website are in 10 different languages

I’ve also found two useful guide to online backup on Wikipedia:
http://en.wikipedia.org/wiki/Online_backup

Online backup is becoming common these days. It is estimated that 70-75% of all PC’s will be connected to online backup services with in the next decade.

Thousands of online backup companies exist, from one guy operating in his apartment to fortune 500 companies.

Choosing the best online backup company will be very confusing and difficult. One website I find very helpful in making a decision to pick an online backup company is:

http://www.BackupReview.info

This site lists more than 400 online backup companies in its directory and ranks the top 25 on a monthly basis.