For those who think long term
I really don't understand the short-termism evident here. I can back-up my entire music collection onto a 50GB disk and then forget about worrying about dead drives for the next 30 years.
I took 25,000 photos last year so that also would seem suitable for some permanent storage so I can be worry free. I have copied my daughters photos from 2005 when she was touring in South America onto an Mdisc and feel happy she will be able to look at them in 50 years time when she is in her dotage.
And I think there could be a business case for storing them in a vault with my will : ) in case the house burns down.
I already have an external M-writer so I can use it with any of my machines