Unfortunately, you can't even use Swapnote anymore either. The reason Swapnote was taken down is likely the same reason the 3DS has no real messaging system. It's because of too much offensive material.
Still bugged we can't use that properly to this day, argh.
Of course Nintendo is known for their 'family friendliness' and what not but seriously. There are always going to be people out there who abuse the feature as such; just keep the incidents isolated instead of punishing an entire community. People will always find as a way...as can be seen with the PSS on X/Y. An all around nice feature but the communication department is pretty shay, especially if you don't feel like trying to chat. Those character limits. ;_;
Never was a fan of those who react rather than be proactive in he first place. :B
/end-rant.
ANYWAYS.
Looks like I have some catching up to do with Direct.