Here are a few links worth taking a look at: Google Trends – www.google.com/trends (thanks to Jason for the pointer). I played around with this a while ago – they’ve improved it so you can compare search trends for different terms at the same time and also see what region the searches are coming from. Woot – Think you can’t make a business based on one product sale at a time? See www.woot.com. splunk’d – You may have heard that AOL released their search database (that actually had customer identifying information attached to the search terms – oops). www.splunkd.com will let you search against this database to see what people were actually looking at – compare your searches to the population at large.