Major agency players, including WPP Group, Aegis and Omnicom, are on the prowl to acquire or partner with mobile marketing agencies, according to a post on PaidContent, citing a New Media Age report. Already, WPP Group has sent out a formal RFP to find a global mobile marketing partner. After a few years of debate about when the traditional sector would notice mobile marketing, there's been an upswing last six months in interest as high-spec color phones and fast networks usher in richer multimedia mobile marketing.