One other interesting limitation that I've seen is whether the person had been to the terminal destination. Wizards in D&D can go off course if they don't know the location well. Ryoko (of Tenchi Muyo fame http://bit.ly/8SjiFf) could only teleport to locations she had been previously no matter how well described.
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Date: 2010-01-07 05:04 pm (UTC)