If something happened to your posting keys via chainBB - it wouldn't be the end of the world, and the most important thing is that your funds would be safe. I need to go through and add better explanations to that part of the website.
In short - if someone got ahold of your posting private key, they'd be able to vote and post as you, but wouldn't be able to steal any of your funds. The posting key only allows actions that could be reversed, and the active key can reset the posting key in case that happens.
Thanks, at this moment i don't see something bad in this but still :D Thanks for wasting your time with me
No problem, you've got every right to be worried about your keys :)