*red+u -> American Red Cross
*bgca -> Boys & Girls Clubs of America
*naf -> National AIDS Fund
*hsus -> The Humane Society of the United States
*9mil -> ninemillion.org
*mssoc -> National Multiple Sclerosis Society
*sierra -> Sierra Club
*unicef -> UNICEF
*help -> StopGlobalWarming.org
*komen -> Susan G. Komen for the Cure
somewhere in your MSN name, each message you send will contribute to one of the aforementioned charities of your choice. It doesn't cost anything and if you're gonna be yapping anyway, doesn't hurt.
Visit imtalkathon for more info on the initiative and charities involved.
My personal msn is email@example.com for anyone interested.