Apparently you can have too much gold

Found on WoW Insider on Friday, 18 January 2008
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Players have discovered that there's a cap on how much money you can carry in the game. Apparently that amount is 214,748 gold, 36 silver, 48 copper. After you reach that lofty sum, you'll no longer be able to receive money from any source in the game. While some responses to the original posts claim that this exact limit had previously been theorized to exist, there have been no reports of anyone in the game actually achieving this amount via legal means.

Some people clearly spent way too much time playing WoW.