Resist the temptation to play the part of an overly harsh "American Idol" judge.
This was the scene in Twitter's cafeteria, sometime on July 12. A few -- well, maybe more than a few -- of the folks in the flash mob dancing to "Baby" by Justin Bieber were slightly out of step with the beat. But the dance involved more than 140 steps, so don't judge too harshly. Besides, it's all in good fun.