isocket, a direct sales platform for premium online advertising, announced this morning that it has closed an $8 million Series A financing round, led by Foundry Group. New investor (and newly-launched firm) Costanoa joined existing investors Joel Yarmon of Draper Fisher Jurvetson, Jeff Clavier of SoftTech VC, Accelerator Ventures, Quest Venture Partners, Blumberg Capital and a number of angel investors in contributing to the Series A raise. The round brings isocket’s total investment to $11 million.