A slew of big name entrepreneurs and celebrities are really circling the drain with their latest investment. Led by Greycroft Partners, a who’s who of celebrity investors including: Mark Cuban, Marc Benioff, Iron Man and Pepper Potts (er… Robert Downey Jr. and Gwyneth Paltrow), Uber’s chief executive Dara Khosrowshahi, Seattle Seahawks quarterback Russell Wilson, Ashton […]