Google Trends is much more elucidating than Alexa. An extremely powerful tool for monitoring points of consciousness.
"Sex" is a particularly interesting argument: http://www.google.com/trends?q=sex%2C+porn&ctab=0&geo=all&date=all&sort=0
Note Ramadan: http://www.google.com/trends?q=sex%2C+woman&ctab=0&geo=SA&geor=all&date=all&sort=0 (...and the correlation between Saudi news stories including "sex" and "woman")
Can't wait for the Trends API.