Twenty-five percent of the population controls 75 percent of the spending, and advertisers will pay big bucks to advertise to find them. That's <a target="_blank" href="http://martinimedianetwork.com/
<a href="http://martinimediainc.com/">Martini Media</a>, an online ad network targeting affluent consumers, has raised $13 million in venture capital led by Granite Ventures, with participation from R
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<a href="http://www.crunchbase.com/company/martini-media-network">Martini Media Network</a>, an online ad network