Right Media is an online advertising company that was founded in 2003. However, it was acquired by Yahoo! in 2007 and is still in business this year under the Yahoo banner.
Yahoo! was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 1, 1995.
1995
Yahoo was founded by Jerry Yang and David Filo.
The question is unclear. If you meant, "Who founded Yahoo?" then it was Jerry Yang & David Filo.
Jerry Yang and David Filo
I'm guessing you meant, "When did Yahoo start operations?" as opposed to "When was Yahoo founded?" Yahoo began in January 1994 as "David and Jerry's Guide to the World Wide Web". The name was changed to Yahoo in April 1994 and the yahoo.com domain was created on January 18, 1995. So Yahoo was founded in January 1994, but, started operations under the Yahoo name and the yahoo.com domain on January 18, 1995.
Yahoo online services were 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.
Yahoo! was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 1, 1995.
Yahoo!, founded in 1994, has always had the same URL, http://www.yahoo.com.Source: http://en.wikipedia.org/wiki/Yahoo!#Early_history_.281994.E2.80.931999.29
According to Wikipedia: "Yahoo! was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 1, 1995." As of 2010, therefore, Yahoo! is sixteen years old.
GeoCities was founded by David Bohnett and John Rezner in 1994 as Beverly Hills Internet (BHI). Yahoo acquired GeoCities in 1999.