Online backup or cloud backup

With todays fast and cheap internet connections it is very popular to make a backup to "the cloud". It usually works like this:

• The backup company provides a program which you install.
• You tell the program what to backup and lets your computer run until all of the data has been uploaded.
• From now on the program will only upload the data that changed, which is usually very little.

One thing to look for, is if the company has a separate restore price. When you have lost your data, it is not fun to find out that you must pay a horrible rate to get your data back. Restore should be part of the subscription.