Yeah having your plants touching doesn't help in a lot of ways.
1. Even though it does not hurt you, it is still way to hot for the plant and will burn/stunt your plants growth.
2. It will block a lot of light from being used by all of the other leaves on your plant(s).
I have found that keeping them a good 2-3 inches works (depending on the wattage of your CFL. Also, if you are going to have the lights 2-3 inches from your plants, then you should have some type of fan blowing the heat away from the CFL's or the area on top of your plants will get to hot and burn/stunt your plants growth.
GL with you grow.