@Just_Ben, there's no hard-and-fast rule about it. It seems, in general, hard-to-believe rumors are bid down, while more plausible ones are bid up. I've posted rumors that have been upbid before. It's a judgment call. On the plus side, if you happen to post a rumor that winds up true quickly enough, you could be in for a good amount of upbids. Obviously, the opposite holds true too.
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