Seasonal depression and internet use
If it is so that there is a seasonal component to mood states, and if many people use the internet to find information relevant to their mental health, then one would expect to find certain Google search queries varying with the seasons.
As reported in the current edition of PLoS ONE, four researchers from Taiwan used data from Google's Insights for Search programme to search for such a trend.
Our findings indicate that Internet searches for depression from people in higher latitudes are more vulnerable to seasonal change, whereas this phenomenon is obscured in tropical areas. This phenomenon exists universally across countries, regardless of language. This study provides novel, Internet-based evidence for the epidemiology of seasonal depression.
Yang, A.C. et al. (2010) Do Seasons Have an Influence on the Incidence of Depression? The Use of an Internet Search Engine Query Data as a Proxy of Human Affect. PLoS ONE 5(10).
nothing more to see. please move along.