also, there is a Best Friend list, which is nifty, cause you can send them mail and other perks i think? (ingame)
cant get it to work tho :/
The Best Friend Feature can only be accessed if you turn off the child personal info protection thing that's always on in the 3DS Parental Block thing. Just go into your 3DS settings and set up a profile thing then turn it off.
It's a pretty neat feature. It has a log too so you can keep track of the conversation. And pretty much if you're both online, even if your gates aren't open, it's kind of like an IM thing? It's neat.