In this third post of our content network series, we would like to share some content optimization tips for your keywords and ad text. In a future post, we will write more about other tips. Contextual targetingon the content network happens at the ad group level, not at the keyword level. That means all the keywords in an ad group, along with the ad text, are evaluated when Google is deciding whether to show your ad on a specific content page. In other words, it’s important for all the keywords in an ad group to belong to a common theme. We recommend keeping separate campaigns for advertising on content and search. Please keep in mind that these tips below are specific to contexual targeting and advertising on the content network and may be different from your search network strategies.