Bieber tweeted his 26-plus-million Twitter followers and the ripple effect was contagious. However, there are many high-profile investors behind the app, which was created mainly by former Google employees. The New York Times, Ellen DeGeneres and Ryan Seacrest all believe in the app enough to put their money where their mouth is.
What do you think? Did Bieber fever cause the app to soar, or was it a combination of powerful resources?