Thanks
I am one month into my program and forced myself to wait at least two weeks before I made some changes. Given what I see as the results of the new keywords, I wish I had not waited.
jb
First, look at your referrer logs to see what terms people were searching for and found your site on, then see which one's aren't relevant, and add the most used keywords which aren't related to your site.
The second is to do a search on Google. Look at the top 30 sites for that keyword, see which one's aren't relevant, and add those appropriate keywords.
The last one is wordtracker. Search on your broad keyword, and make a list of all the highly used terms that don't fit your model.
By using negative keywords properly, you can really get a jump on some competition as if your ads are only relevant on a Google search, your CTR will be higher than your competition who's not using them, thus not only drivng your ad higher in the listing, but also driving your CPC down.