Quantcast, a website that monitors stats for websites announced earlier this week that they have raised $27.5 million. Cisco Systems is the leader investor in Quantcast. Quantcast competes with Alexa and Compete.com. Quantcast plans to use the funding to expand their advertising platform.

“Quantcast’s approach and technology for delivering high-value, targeted advertising aligns with the needs of Cisco’s customers, from service providers to media companies and ultimately consumers,” stated Cisco SVP and general manager of Media Solutions Group Dan Scheinman. Other investors include Polaris Venture Partners, The Founders Fund, and Revolution Ventures.

Analytics company Quantcast is seeking a $50 million round of funding which would put them at a $300 million valuation according to PEHub.

The company is rumored to have received several term sheets, but the identities of the investors is not yet known.  Quantcast monitors the traffic and demographics of about 10 million web sites and they are finding ways to monetize the service through a Media Program.  The Quantcast Media Program gives advertisers the ability to select the audience they want to reach by having access to demographic information.

So far Quantcast has raised $25 million in total funding.  Allen & Company invested $20 million Series B in 2007.  Other investors include the Founders Fund, Polaris Venture Partners, and Revolution Ventures.