Graphs of Google search frequencies*; 

Vegetarian vs vegan vs raw foods, at:

http://www.google.com/trends?q=vegan%2C+vegetarian%2C+raw+foods&ctab=0&geo=all&date=all

Raw foods vs raw vegan:

http://www.google.com/trends?q=raw+foods%2C++raw+vegan&ctab=0&geo=all&date=all

Living foods vs raw foods:

http://www.google.com/trends?q=living+foods%2C+raw+foods&ctab=0&geo=all&date=all

Vegetarianism vs Atkins diet:

http://www.google.com/trends?q=+vegetarianism%2C+atkins+diet&ctab=0&geo=all&date=all

Vegetarianism vs South Beach Diet:

http://www.google.com/trends?q=+vegetarianism%2C+south+beach+diet&ctab=0&geo=all&date=all

Interesting!

These terms:
fruitarian, natural hygiene, 8-1-1 diet, hippocrates diet, instinctive eating,
ann wigmore, herbert shelton -- did not have enough search volume to even
bother graphing.

*Presumably search frequency is a rough proxy measure for popular interest in the
topic.

The data above suggest that raw diets are marginal, at best.

PS see data constraints noted at bottom of Google pages cited.

Tom Billings