I have the Apacer Disc Steno CP200 and use it with 256MB cards. I take the Steno with me and mostly copy to disc every day. So on a recent trip each day's day trips or beach shots go to CD.
Yes it is limited to CD-ROM or RW and 700MB, but I am not sure I would want to have a 1GB card and keep that in the camera until full, before I did my security backup!
One thing is very easy to do is to lose the EXIF info!!!!! All you have to do is take photos and connect camera to PC, edit the pictures in Photoshop and save the edits. No more EXIF.
The Apacer therefore gives you security of saving the original untouched photos inclusive EXIF data to a CD-ROM (I prefer that medium to RW) - which cannot be altered.
It also plays DVD's on a TV and quite acceptable quality too, at least I have had no problems.
It also acts as a reader in OS X, Linux and Windows without problems.
Its a case of being a digital photographer, you need one of these!
Everything man-made has compromises of one sort or another the Apacer included. On balance it comes in the VERY useful, I would almost say essential bracket.