Microsoft’s adcenter has added a new tool that forecasts keyword searches while presenting historical trends (past 1 year in Internet time). Example – enter keyword ‘new york travel’ and see the spike from Dec through March 07. A demographic profile adds more meat to the results.
Google’s Trends (launched earlier last year) shows keyword search trends by year and month and also by news mentions/region/country of searchers performing searches.
As sponsored search continues to be an important driver for online travel sites, the new applications are worth checking out.