IPDI has a good post about how the ‘08 Candidates do their advertising on the blogs. The basic strategy used by the candidates seems, according to IPDI, to be to create ads that invite blog readers — who are typically considered part of the group of Influentials that are wooed duringe very election cycle — to click, learn, and act all while getting the candidate’s name out there and earning some money.
Read more about the basic strategies used to target bloggers over at the IPDI-blog.