I also count carbs rather than calories!!
I eat foods with less then 5 carbs per serving for breakfast, lunch, and snacks, then pretty much don't count them for dinner.
I'm changing my answer. I follow both:
The Blood Type Diet: http://www.dadamo.com/
and
The Glycemic Index: http://www.glycemicindex.com/
I also follow a high-Lysine, low-Arginine diet because I suffer from chronic shingles.