I was interested in whether global interest in
Salvia divinorum seems to be growing or lessening. With all the fuss about YouTube, etc, one may think that there is a salvia epidemic going on. So, I decided to check out
Google Trends which uses search volumes to gauge trends. Here are the results for “salvia divinorum” (blue) and “salvia” (red):

So there you have it, interest in
Salvia divinorum has been pretty much flat since the beginning of 2004, with some spikes in 2008 coinciding with prominent news articles.
Does anyone know what the spike in the first quarter of 2006 is? I saw a similar spike for that period in another data set (which I will tell you about later). It happens to coincide with Sweden banning both the plant and salvinorin on the 1st of April, but I doubt that would have that great an effect. Other ideas?