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"What is so wrong about digging up dirt on shady journalist? [sic]" Kutcher asked, tagging PandoDaily, TechCrunch, and Uber in the tweet.
He goes on to say "We're all public figures now!"
Kutcher, who founded his VC firm A-Grade Investments in 2010, has invested in several companies besides Uber, including Secret, BloomThat, Airbnb, Fab, and Flipboard.
Here's his tweetstorm: