Car: MY13 1.8 EX Auto
Join Date: 7th January 2007
Location: West London
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I know about the deliberate short words as mentioned but in my memory is an apology that it was a bug.
Wonder if I can find the original post?
The best I can find is a post by Pottsy on 15th Feb 2009. It does look like 4 is the minimum. However, if you want to drill down into 3 letters or less then use the Google search function at the bottom of the advanced page.
I can't provide a link to the above post as I'm not on the PC.