There are technical differences between the two, and people still argue over
which format is better. Truth is, it's really about marketing, and who will
control the technology for recording DVDs. DVD-R/W was created by Panasonic
(or was it Pioneer) and its allies, whereas DVD+R/W was created by Philips
and its allies. If you remember the VHS vs. Beta wars, its a similar thing.
Modem Ani