The best way to contact me is to send me an email:
herve . guillou @ neel . cnrs . fr

Obviously you will need to remove the spaces.

Voice phone number is : +33(0)4 76 88 12 10, I usually keep my cell phone for private issues or really urgent things. If you don't have it and want it, send me an email, I will give it to you.

I have a twitter account which I use to follow scientits, artists, friends, philosophers etc ... @herveg8414