No, i do n't too respond twice of discussions at a time bcuz we do n't get a single cent from any of the post of such twice posts. I did it once and my ranking did n't increase. After it, i never did it again.
Ohhhhhh. Sorry, there was misconception of understanding urs question. No, i do n't respond to any question more than once but sometimes, it happens when i forget that i've already respond to this discussion.