Last month, General Mills-owned Chex Mix began advertising on Yahoo's Fantasy Football mobile site, m.yahoo.com/fantasy. The campaign, by agency partner MRM Worldwide, presents users that click on a banner ad the abil­ity to send "smack talk" to their friends with voiceovers from former pro football stars, such as Barry Sanders, Desmond Howard and Elbert "Ickey" Woods. It is part of an online integrated campaign with Yahoo's Fantasy Football Web site.