Joshua Schachter founded Delicious and sold it to Yahoo! in December 2005. Then he left Yahoo! in 2008 to join Google in 2009. This year he is involved in a stealth start-up company called Tasty Labs. According to the company’s homepage, Tasty Labs will put “the useful back into social software.” Tasty Labs has funding from Union Square and Andreessen Horowitz. [Union Square Ventures Blog]