When it comes to advertising your stuff online, some words and phrases correlate better to purchase intention than others. If you were buying Ad Words to promote the book The Case for Christ by Lee Strobel should you buy the book's title or the author's name? It turns out there's a .83239 chance that the title represents a commercial query whereas Lee's name has only a .58141 chance of the same. Buy the book title.
How do I know this? I got a little help from Microsoft and so can you.
Microsoft AdCenter Labs offers a Commercial Intent database (try it here) that lets you type in a word or phrase and receive data on likelihood people searching that phrase will buy something as a result. Very handy when you are trying to optimize that Ad Words campaign.
Spread the fire. GS