eWhisper - 6:57 pm on May 31, 2006 (gmt 0)

The data is based upon Passport data, some manual data, and a few other sources.

Overall, the data appears to be disparate enough to have a fairly high confidence level in it's validity.

I suggest everyone play with the funnel, and then take those keywords and use them in the demographic targeting section to see how the numbers play out - one can start to define a demographic funnel - quite interesting.