Marchex, Inc. (NASDAQ: MCHX) (NASDAQ: MCHX-), a local online advertising company and leading publisher of local content, today announced that its VoiceStar subsidiary has signed a new comprehensive agreement with The Cobalt Group, North America's leading provider of automotive marketing services, to provide call tracking and pay-per-phone-call services to Cobalt's local auto dealers across North America. Cobalt provides marketing services to more than forty percent of the auto dealerships in the United States.
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