As someone who takes photographs professionally and personally, I am always running out of storage space. With imaging becoming all digital, it means I have to find virtual space and even then it is precarius. Computers can be stolen, can break, cds can become corrupt, hard drives can also become damaged.
I joined flickr recently and paid $25.99 for a years subscription, unlimited uploads. Its a great way for me to store my images online! The benefit is that I can access my images anywhere and they feel 'safe' - I am sure that Flickr have great precautions to protect the millions of images they house.