Hi RR's fellows.
I just write a (french) article about things to know when you backup datas on CD and wanting to store them for a long time (here is a Google translated version).
Here is the sum up (the last part indeed):
- handle a CD by its edges or its center
- burn at low speed (lowest?)
- store CDs at room temperature, away from light and moisture (in CD box)
- cleaning (if necessary) from center to the outside, with dry cloth