This article focuses on customizability technology and its implications for the Selective Exposure Theory. 2 important dimensions of customizability technology (i.e., user‐driven vs. system‐driven, and topic‐based vs. ideology‐based) are explicated. The potential relationship between these customizability dimensions and selective exposure is discussed. 2 models of customizability effects are developed incorporating various user‐level and content‐level variables, providing a detailed roadmap for future research on customizability technology. Theoretical implications of customizability technology beyond its effects on selective exposure are also discussed.