I've just recently found out about a company with CD/DVD media/drives which don't use dye layer but actually melt a pit in the media. Here's the company site http://millenniata.com/ and a good article about archival storage in general http://goo.gl/vDwAZ. The drives aren't ready to ship and I was going to pre-order one, but decided to let someone else be the early adopter and have the fun with the low s/n machines.

I also had somehow missed or ignored information about JPEG 2000 files, which I should have been using instead of .jpg for my personal storage. For a while it looks like .jpg & .tif are still the lingua franca for image exchange, however.