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CastTV is working to build the web’s best video search engine. CastTV lets users find all their favorite online videos, from TV shows to movies to the latest celebrity, sports, news, and viral videos. Our proprietary technology addresses two main video search challenges: finding and cataloguing videos from the web and delivering relevant video results to users. Our goal is to index every video online and provide the best experience for finding and discovering these videos. We’re funded by DFJ, Ron Conway, and Marc Andreessen and our smart, experienced team is advised by Rajeev Motwani and other notable industry veterans. Our founders are Stanford alums who sold their previous company to Oracle. We are hiring entrepreneurial folks looking to make an impact and help build an amazing product. CastTV is based in the SoMa neighborhood of San Francisco, CA.

Comcast Corporation (NASDAQ: CMCSA) is the largest cable television company and the second largest Internet service provider in the United States.[1][2]

Facebook is a social networking website, launched on February 4, 2004. Facebook was founded by Mark Zuckerberg, a former Harvard student. The site has more than 62 million active users (including non-collegiate members) worldwide.[4] From September 2006 to September 2007 the site's traffic ranking increased from 60th to 7th, according to Alexa.[5] It is the most popular website for uploading photos, with 14 million uploaded daily.[4]

Nuff said.

NearbyNow was founded to simplify shopping for today’s consumers who browse online but buy in stores. By allowing shoppers to find products, brands, or sales locally, and to scan the inventory at any given shopping center, we provide a convenient shopping experience for the consumer and an effective marketing tool for merchants looking to motivate local customers.

Ning gives everyone the opportunity to create your own social networks for anything. Today Ning powers the largest number of social networks on the Internet. Ning offers the latest social networking features, all infinitely customizable to meet your unique needs. The Ning Platform makes this possible. As a platform, you don't have to appeal to Ning for the features you want. If you have the time and the inclination, you can build them yourself. It's the software equivalent of Home Depot. Unlike other services that offer a “one-size-fits-all” offering, your social network on Ning runs on a programmable platform.

Rapleaf is a meta-reputation system that allows users to create reviews and ratings of consumer transactions, which they then contribute to multiple e commerce websites.

CRM software powerhouse.

Yahoo! Inc. (NASDAQ: YHOO) is an American public corporation and global Internet services company. It provides a range of products and services including a web portal, a search engine, the Yahoo! Directory, Yahoo! Mail, news, and posting. It was founded by Stanford University graduate students Jerry Yang and David Filo in January of 1994 and incorporated on March 2, 1995. The company is headquartered in Sunnyvale, California.