I've got an AOL CD that's lasted as a good coaster for the last couple years...

But seriously - I'll second or third the above. I'd say the advantage that CDs might have is the rate at which they insinuated into society in a couple of nitches - music, software, the similar technology of DVD, etc.

Given that, and the fact that they're one of the only recording mediums currently that don't suffer degredation from use (beyond handling damage/scratches), I'd think they'll be something that will last a bit more in society.

Could be wrong though.

M