CPF'er (See-Pee-Effer) - Noun:
A person who frequents CandlePowerForums.com. Many of these people are very passionate when it comes to flashlight modifications and go to the extent of measuring output lumens, power consumption and many other data points regarding their latest mod and posting it on the internet.
This is *my* definition. I am amazed at some of the things I've read there.