Where's the fun in owning an exercise tracker like the Nike+ FuelBand if you can't lord your healthiness over others? Nike must have wondered the same thing, as it just updated the FuelBand's iOS app to add Nike+ Friends. Wearers can now learn where their step count places them relative to their peers and share the results for all to see. Should there be any doubters, owners can attach photos, locations and mentions of nearby friends to back up their boasting. Yes, it's an upgrade that's primarily focused on oneupmanship, but it's good in our book if it makes us walk just a bit further each day.