Google.org is now using results from flu symptom searches and creating a database that finds the location of the searches and creates a map/graph. This map/graph will illustrate based on the user searches where there might be a problem or issue with the flu.
The only downside to this is if I search it just to make myself knowledgeable my area might get red flagged. However, it does state that they will go ahead and check with he Centers of Disease Control to see if an epidemic has evolved.
Either way it's a step in the right direction. I just have an issue with google knowing what I search online. Then aain, I have the G1 phone, they know where I'm at at all times.