Instagram's Mike Krieger says there are 2 reasons he's made it through 6 years without wanting to strangle his cofounder -- unlike most of Silicon Valley

Getty Images/Paul Zimmerman As Instagram cofounder and CTO Mike Krieger said, Silicon Valley is littered with the corpses of business partnerships. In a discussion with the New Yorker's online editor Nick Thompson this March at the 92Y in New York City, Krieger said that he "can't stress how rare it is" that he and his cofounder, CEO Kevin Systrom, are still friends after working together since 2009. It's even more surprising, Thompson added, given that Instagram went from a tiny startup to a bi...