Seattle-based BlueKai, a provider of online advertising analytics and related services, said Monday that it has raised $21M in a funding round. The Series C funding round was led by GGV Capital, and also included prior investors Redpoint Ventures and Battery Ventures. The firm said it has now raised $34.7M in funding, including a prior $13.7M raised in two earlier rounds of funding. Jeff Richards of GGV Capital (formerly Granite Global Ventures) joins the firm's board as part of the funding.