Ben Trenda thinks he can stop the trolls on Twitter and other social spaces. He’s building Goodtalk, where famous people can have public one-on-one conversations without interruption. But if you strip away the bad, will you also lose the things that people really like about social? And if you don’t have enough people, your social network is worth nothing.

Today's investors are Soraya Dorabi, Phil Nadel, Sarah Downey, Charles Hudson, and Michael Hyatt.