Gowalla, the location-based social network that grew out of Founders Fund portfolio company Alamofire (creator of PackRat) closed $8.4 million Series B round. In just ten weeks following launch, Gowalla has found immediate popularity, and has more than 50,000 users who collectively visit the site more than 20,000 times each day, and the new funding will help the company continue its rapid expansion and development of services. Click for more information on the round and our portfolio company.

Quantcast has closed a $27.5 million Series C round, co-led by Cisco Systems, Inc.; the capital will help accelerate adoption of the Quantcast Media Program. That program, launched in June 2009, allows marketers to use insights they have gained about their existing customers to seek out other, highly-similar groups of potential customers across the web. Marketers can thus target carefully-designed audiences that closely resemble existing customer bases or custom demographic profiles, making advertising considerably more efficient, and they can do so at enormous scale, because Quantcast monitors more than 10 million web assets, 220 million US (and more than 1 billion global) web users, and almost 9 million events per minute. To learn more about our metrics company, click here; to learn more about the Series C financing, click here.