Compare your game stats to your friends’ game stats
Compare your game stats to stats from players around the world
Upload screenshots Post content you create, such as art or videos for others to download
Rate user-created content
See what your friends are playing at the moment
Manage your Friends Roster Create and/or read blogs linked to the site
Schedule dates/times to play DS games against friends or players from around the world
Form clans/guilds/crews with friends or players from around the world
Submit videos to the site
Submit strategy, tips and tricks to a game-specific forum
Participate in user-defined forums
Personalizing the way Nintendowifi.com looks
A final question raised the possibility of more widespread free NiWiFi access:
“Suppose finding a Wi-Fi hot spot was not an issue, so you could play your Nintendo DS over the Internet anywhere outside your home. In this case, where would you like to be able to play your Nintendo DS over the Internet?"
Kotaku also learned that another question asked was about whether or not gamers would prefer a single friend code to be used for every Wi-Fi game. Since managing multiple codes can be a pain, it'd be great for Nintendo to put this into effect.
You can read the whole article at Kotaku here.