This paper evaluates the effectiveness of banner advertising in strengthening brand relationships. It presents hypotheses that banners can communicate brand values and increase brand relevance/differentiation, thereby helping build brands. An experiment was conducted where respondents were exposed to no, banner-only, or banner+microsite stimuli of the Timex brand. Results showed that banners significantly improved perceptions of Timex's values and relevance/differentiation compared to no exposure. However, the microsite did not further improve perceptions over the banner alone. The study thus supports that banners can play a role in brand building.