norton online backup

Good evening all. I backup my pc once a week using an external hard-drive called Clickfree which has a built- in backup program. My main reason for doing this is to preserve the large quantity of digital  photos that I have on file. A friend,who also uses NIS 2011 suggests that I should also use Norton Online Backup, ie a kind of belt & braces!

  I use Sky Broadband,but have never uploaded anything. My upload speed is only 0.8mb which to me doesn't sound very fast? To use Norton Backup is also quite expensive,so my question to you guys is,is it worth the cost & the inconvienience of  tying up my pc for who knows how long...?

                           Seabiscuit