Are you allowed to have multiple accounts simultaneously on Yahoo Answers?

I'm pretty sure there's some kind of rule saying you can't use multiple accounts to abuse the point system by giving yourself best answer all the time. However, I don't recall whether having multiple accounts active at once is actually banned outright, provided they don't interact with each other. I had a quick glance at the TOS and didn't see anything about it there. The Community Guidelines state that 'creating multiple accounts or posting content for the sole purpose of gaining points or soliciting others for points is not permitted' and not to 'create multiple accounts to troll or otherwise violate these guidelines or the Yahoo! Terms of Service', but are these to be interpreted as meaning that multiple simultaneous accounts are unconditionally disallowed? Can anyone verify this one way or the other?