I found this web-site that did a really good job of explaining CD Technology such as CD-R, CD-RW, Mini-CD, Disc T@2 feature, and etc. It has some nice pictures and guides to help define what each part on the CD means or does.
PC Technology Guide on CD Media
http://www.pctechguide.com/09cdr-rw.htm
Maybe this thread should be moved to the FAQ section too?

