My other concern with the world moving to CFL's is that I assume they don't do well in cold - like other fluorescent lighting.
If so, they simply cannot be used in our horse barn. If incandescent bulbs disappear its back to using Coleman lanterns in winter - another safety issue in a barn.
Light diodes (LED) will not have this problem. They work better (more efficient) the colder it is. On the other hand, cooling may be a problem. The LED will fry and die if it gets too hot. Also, the electronic circuits of the "ballast" is most happy within a certain temperature range (this goes for any electronic equipment, so nothing special).
I know LED light bulbs for standard couplings and voltages are available, but I have absolutely zero experience with them.