Just wondering how many frequent flyer programs (airline related, not hotel) Flyer Talk members are enrolled in and how many they have claimed rewards/upgrade rewards in.

I belong to and am actively collecting points in 4 air travel programs (3 airlines and Canada's Air Miles program for shoppers). I have claimed rewards in 2 programs and have enough points to fly in 3 programs.

I am only really serious about collecting miles in one program though.