If you fap but don't *** that is called edging. If you are doing that to porn, you are still damaging your brain and wiring it to porn. Not good, and overall not very helpful in the no fap challenge.
I quit fapping last month and it was the best decision of my life. I have a drive to hit on chicks like I've never seen. I can't explain it, but I just take action. It's great. A couple of other things that have helped me is to take Zinc supplements. It has been proven that Zinc boosts your testosterone, due to zinc being not as common in today's diets.
I know this unrelated, but thought some of you guys would get a laugh out of this video. Talks about damage that fapping does to the body. lulz.
http://www.youtube.com/watch?v=QyD_qIchAds