Sorry Donald, i need a lot more info than that.It downloads game data for you over the internet (it works similarly to StreetPass), but can also download system updates silently. That's why I like to keep it disabled.
So, to put blandly, it's a waste of system resource, am 'i righty?
...when it's in standby mode. (SpotPass may download/upload some content while the 3DS is in "active" mode, but *only* if the currently active app uses SpotPass)
Ditto!The only real wastes of system resources are the warning info and currently Swapnote, since the best part was disabled due to Japanese penises.