Volatile Millennial Media (MM -6.2%) is posting big losses a day after top rival Google said its mobile business (dominated by ads) is on an $8B/year run rate, but also reported a 15% Y/Y ad price decline that was likely influenced by mobile. Earlier this week, the CEO of Jumptap, another Millennial rival, said his company is considering an IPO or a sale - Millennial could be an option if the latter is the case. (Q3 pre-announcement)