Crowdtap , a service that allows marketers to easily collaborate with and mobilize targeted crowds of influential consumers, announced today that it has raised $7 million in series A funding. The round was led by Foundry Group , with participation from GSA Venture Partners and social media agency Mr. Youth . Mr. Youth invested $3 million of seed funding in Crowdtap back in 2009 (and served as an incubator for the company during its early stages), which brings the startup's total current investment to $10 million. Crowdtap said that it will use its infusion of capital to ramp up hiring in both its sales and engineering teams.