Now here's a place to find people to play ur fav DS games with via Wi-Fi. Post ur DS game friendcodes, for Mario Kart DS, Animal Crossing WildWorld, Tetris, Pokemon Diamond & Pearl, Metroid Prime, etc. and race, battle, trade with ur new found Wi-fi partners here.
Of course. If anybody has 3DS, he/she can use the new feature (dunno the name but its awesome). I never got to know that we can battle people worldwide with Pokemon Gen IV games O_O