Aside from my ankle problem, my left foot has been a problem as well. I've been to the Dr's for it, and they didn't come out and say that I had PF, but what they did was put me in a medicated cast, and gave me a huge walking boot for a few wks. Between the time I got the boot and cast off, and when I started riding, my foot has bothered me, but since I've been riding, I haven't noticed it as much. And honestly, I haven't noticed the fact that it hasn't bothered me until I read this thread. So yea, riding could very well possibly have a lot to do with easing the pain of PF.