Abstract: Blog advertisement selection and placement is driven by the analysis of different facets, which are defined as why-facet, how-facet, who-facet and what-facet. The objective of defining such facets and their labels is to be able to better classify and distinguish information from blogs with the goal to use these different facets to better target advertisements on blogs. A model of features is built and maintained that classifies information from blogs along the defined facets. The features, including non-keywords and keywords, are extracted from a set of blogs of at least one blogosphere. Non-keywords are related to the blog information and keywords, and assist the keywords in the classification of the different facets/labels. An advertising campaign is defined in terms of the defined facets. The model and the defined advertising campaign will then be able to determine and/or predict placement of an advertisement in a blog or blog page.