In order to provide better information to the Pokémon community, a user by the name of PokeWalkerProf has created a survey for users of the Pokéwalker in HeartGold and SoulSilver. The ultimate goal of the study is to find a more efficient way to gather watts than walking. Secondary goals are to find as many ways as possible to accumulate watts short of actually walking.
Discoveries already made include a lag in the system where steps are recorded at the same pace for a few seconds after the movement stops.
More information may be found on the official site.