Faceted indexing and searching are being increasingly studied in the literature and used for real-life applications, e.g., for publishing heterogeneous museum collections on the Web. In this paper, we discuss in brief several aspects of managing (faceted) taxonomy-based information sources. Specifically, we discuss (i) the semantic description of faceted taxonomies, based on the Compound Term Composition Algebra (CTCA), (ii) the revision of CTCA expressions, as faceted taxonomies evolve, (iii) the dynamic generation of navigational trees (and other applications of CTCA), and (iv) the integration and personalization of taxonomy-based sources.