Even without reading who has posted in this thread, based on the current poll results, I get a distinct feeling that the strength crew bois (0ni et al) have been tainting the votes.
Clearly the question was "do you ever train arms only" (not are you doing arms only at the moment), in which case, why would the polls say "No" in the bodybuilding section.. surely it has it's place at times e.g. when trying to bring up your arms through specific direct training of the arms when they are fresh.