I'm not fond of it. From a cost effective and convenience stand point, you can't beat a floppy drive to transfer a couple word docs from one unetworked computer to another.
And regardless to what some people say, floppy disks are quite resilient. I've got disks from 6 years ago that I still use to transfer stuff around. That includes being dropped, flung, smashed, and battered throughout the years.
CDR(W)'s are more expensive, may require special software to use, and aren't universally read in all drives.
Compact flash is more expensive, and I question the long term durability of the readers and media after a card yanked in and out of them a couple times a day 20 days a month, 12 days a year, for a couple years time.