I bought my trail runners today, and the shoestore guy also sold me a pair of Superfeet (the green ones, chosen by length, not by heel/arch size). He said they would help keep my feet from spreading, and properly support my arch, etc etc. He did assure me that I can return them, which brings me to my dilemna.
I'd never heard of them until he pointed them out. From what I've read on here tonight, most people have bought them AFTER having foot problems. I've got no foot problems that I know of, and am not particularly concerned about any possible foot spreading.
Basically, my question is thus: are Superfeet a good idea as a possible prevention method? Should I hold off and only get them if I have foot problems?