Here’s a tip for finding negative keywords for PPC campaigns as well as websites to link to for linking campaigns. Set up Google Alerts for those keywords your advertising on. Depending on the popularity of your keyword(s) you should start receiving emails from Google pretty quickly with links to various articles, blogs and websites. It’s very likely some of these articles will have nothing to do with the keyword you’re targeting. What these resources may have though are variations on your keyword you don’t want to advertise on. Add these as negative keywords to your Google, MSN, or Yahoo ad campaigns.