I have just read that there is something called Wii speak that is about £25 to buy but can only be used on games that knowbody is interested in using it ie animal crossing. Im sure most people will want Wii Speak for SSB and Mario Kart is there anyway anybody could possibly patch this so that these games can have the Wii Speak working as Nintendo have said its not going to be available on these games as people might use foul language.
Sorry no way of patching. I agree Ninty have missed out here. But bet wii2/hd will have wireless headsets etc.
When I play my friends at Mario Kart we skype with loud speaker on, so you can have a good laugh while playing,