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StumbleUpon No longer Has A CEO, Is Part Of Expa’s Mix.com (Also 5by Is Shutting Down)
It would appear that StumbeUpon is no longer a company with a CEO. There hasn’t really been a lot of clarity around this in recent months, but that appears to be the state of things. Over two years ago, StumbleUpon (under CEO Mark Bartels) made its first acquisition with 5by – a video discovery service…