A vote on PALnet automatically means a vote on Steem as well. If you upvote a post on Steem that is tagged with palnet it will also 'reward' on palnet automatically, even if you didn't do the voting 'there'. It's all interlinked. Some like that, some don't :-) It's interesting at least, because the distribution is different, so your biggest value vote on PAL might be a 0.01 vote on Steem :D