I remember trying this some year ago when a lot of bloggers were trying it out and blogging about their experiences. I tried the Uberman Sleep Cycle (4x15min) but inevitably it wore me down to the point of being completely nonfunctional.
I am an introvert and I have been fighting this for a very long time. Recently I started my own meetup groups to push myself into meeting new people and hopefully helping me become a little more social.