Parental controls are good and everything, but the parents themselves - adults - should be able to choose whichever game they like.
Back in the day different regions (with home consoles!) existed because of different TV broadcasting systems, mainly NTSC and PAL. But in this day and age and especially on handhelds, which have their freaking screen built in, it's just the height of cheek to implement region locks. Everybody talks about globality and how the world becomes smaller and smaller and then they do stuff like that. /rant over. (My "Nintendo Love Meter" lost a lot of hearts with this stupid decision.) >:(
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