I noticed that many people are not getting what AIM and steam ID is so ill tell you all you need to know about the profile editing.
Xbox live-not how many Xbox's you have/your Xbox live ID Wii-your wii system name so someone can contact you with the wii. Ps3-your Ps3 ID and finally steam id I know alot of people have no idea what this is but I do. The SteamID is what you have when you have valves steam program. This allows you to play half-life 2 deathmatch,team fortress 2,and counter strike source.
People do these things to be funny and/or creative. The people who do this are not stupid, they don't want to give out that information, but have a desire to type something smart next to "Wii" and "Yahoo"
Don't get too stressed out about this. If you really really want someone's AIM, ask them for it.