well i know that. what i don't know is if i earn interest just by powering up or i need to "deposit". and i don't vote posts that i think are going to make it to the top, i vote posts that i want to make it to the top. I want to influence and reward good stuff, not pay to the circlejerk. For example, this was a cool post and i upvoted you. hope you make it to the top too but anyway, my vote of confidence was given :)