Google Insight is a search giving you insight on what world (netizens) are searching on the internet. You can enter any keyword and see its trend over a period of time.

It allows you to compare different search terms, search by different locations and time ranges. You also use filters to refine your search further. Filter by country, year and even categories.

Choosing appropriate category can dish out very specific and different results as against results using default settings. It also displays world heat map to graphically display search volume and regional interest. Checkout results of keyword Apple - interesting?