I agree with mils. When I describe my enjoyment regarding female feet and tickling, I always tell people that I have a dual "Interest" of tickling, and female feet. Although, my real life friends do say to me: "Mitch, we know you have a foot and tickling fetish", and that doesnt offend me.
I think I feel as I do, because the word "fetish", has a negative connotation. People think: "Oh, this person cant get aroused sexually, unless they are tickling someone, or in contact with feet". For me, that is not true. I dont have to be tickling a girl, or playing with a girl's feet, to become sexually aroused. For this reason, I refer to my enjoyment of feet and tickling, as "interests". It also sheds them in a more positive light, I feel.
Mitch