Photo: Yalcin Sonat (Shutterstock) Clubhouse, the invite-only social audio app, recently announced it has raised another $100 million funding round, led by Ben Horowitz’s a16z fund. The app is now firmly a Silicon Valley Unicorn, a private startup valued at over $1 billion. This is a meteoric rise for an app that launched amidst the pandemic in 2020, with little-to-no initial fanfare outside of the tech and investor community. Now, Clubhouse boasts over two million weekly active users.