The nice thing is you can filter the results regions by regions. As soon as Google Insight appeared in 2004, I've been fascinated about the side effects and correlations retrieved from the simple analysis of those curves. One of the most famous example of this is the propagation of flu activity that can be deduced from symptoms people search before going to the doctor.
But in addition to this amazing data mining aspect of Google Insight, I realize it could also be used to report and keep track of a few micro event (if not very personal ones). My daughter's name is Elora, she was born on the year 2005 at the end of december. Searching for its (not so common) name on Google Insight, I discovered that there wasn't any single activity around the term Elora - for the entire region I lived in - before she was born. And obviously, activity becomes noticeable around her birth date, revealing her (proud) parents searches as well as those initiated by friends and familly.
In a thousand years -- provided google databases survives in some way -- an archaeologist, without any prior knowledge about this event, could yet deduce that a girl once named Elora was born there on the year 2005 around decembre 25th. That's what one could define as a "Future Archaeology Micro Event" (or just pompously FAME!).
