Minor corrections

![Capture d e cran 2013-01-19 a 15 01 50](https://f.cloud.github.com/assets/433913/80588/e61360e6-6273-11e2-9912-73978faac7dd.png)

Corrected the GMT time to 23:00 

![Capture d e cran 2013-01-19 a 15 07 54](https://f.cloud.github.com/assets/433913/80590/fc14e784-6273-11e2-8902-37d037f2c361.png)

Updating my confusing twitter username on my 1st talk