Would’nt it be fun when a few of employees suddenly dance to a music for the purposes of entertainment and then the audience dances along with them same time. Flash Mob is widely used for entertainment in telecommunications and Social media companies. Employees at Twitter headquarters had cheers and applause for a surprise flash mob on July 12, when workers at their San Francisco office did their absolute best to get it out of their system by participating in a lunchtime flash mob set to Justin Bieber’s pop hit “Baby”.