@arhag made a good article on this issue a week earlier... I did not know about the article... the best and easiest thing is to sell these rShares, which seem to be recharging using the Steem Power. That would be really perfect, and you would have something that you could really call a real return for the Steem Power. This would also incentivize people to stay powered up, even if they have no time to curate or write articles...