Searching - Why is there a 3-character min length?

[DanL]

I was trying to search for some information about the 30 inch or 2x balls today. To my disapointment, my searches weren't allowed because "30" and "2x" are 2 characters, and so, under the board's 3-character minimum. This hasn't been the first time I've encountered the same problem while trying to search for something either. I know I've been complaining a lot about the board on this forum, but is there a reason that search terms have a minimum of 3 characters? To me it seems like its just getting in the way =(