Anyone who has had a bad experience in a meeting understands that there are things that are said and done in live meetings under ideal circumstances that are counter-productive to the purpose of the meeting and that these things are difficult to control.
Moving to an "online" format for a meeting may actually improve a handful of these things - but at the price of making the effects of most of the bad behaviours even worse.
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http://prweb0.voicenet.com/~suler/bolchat.html
http://www.virtual-college.co.uk/products/meeting-behaviour-problem-characters.aspx