Which celebrity launched a social media platform called 'Blackout' in 2015 that shut down after just 6 weeks due to poor user adoption and technical issues?

Even the biggest celebrities can't guarantee product success! This poll explores one of the most notorious celebrity product development failures in recent history. While celebrity endorsements and product lines are a major marketing strategy, not all star power translates to sales. Test your knowledge about what happens when famous names attach themselves to products that just don't resonate with consumers.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Justin Timberlake with his revival of Myspace
Alicia Keys as Creative Director for BlackBerry
Will.i.am with his 'Puls' smartwatch social network
Jay-Z's Tidal music streaming platform