With keepit.com you don't need to know what resolution your camera is and how much space you need. You have unlimited space. Keepit by default creates a backup every day. However, if you want it another way, you configure which days Keepit should start the backup. Before transfering anything over the internet, it is encrypted using your private key. This means that no one else can intercept and look in your files. More info »
This one looks kind of interesting. Unlimited space for a reasonable amount of money.
