Yes flash memory is basically for transportation but it is becoming more and more useful as plain secure storage as the drives become bigger and bigger...
I would not think of them as memory any more as much as harddrives. More and More mobos are seeing them this way also and have started to allow booting from a flash drive. This is really helpful to techs as they can now carry this bootable drive to different places and always have it handy to work from.. I know someone that actually has linux on a flash drive that he uses in a lot of different computers.