In the past few years, the materials of which objects are made of have increasingly gained attention, particularly in relation to the design and usage of computational objects. Different kinds of materialities have been investigated, discussed, and attentively designed. In order to contribute knowledge on how the materiality of things influences how individuals experience (im-)material artefacts, this paper presents an inquiry into two independent debates on Twitter about whether or not consuming alternative material representations of books (audiobooks or ebooks) "count as" reading. Our findings indicate that experiential aspects of the material instantiations of books are of high relevance and that individuals show strong emotional and reflective responses about them. We discuss several aspects of materialized reading and conclude by detailing how the findings may influence (research on) the design of future books.