International audience Our search for new sources of analysis has led us to build a quantitative inductive method based on the analysis of lexical fields (topic models) to study teachers’ blogs. This approach generates new insights about teachers’ concerns in expected areas, such as their discipline or their own use of digital technology, but also in unexpected areas, such as dress code issues, or terrorist attacks. This article presents our method, and explains how and why it provides us with new opportunities for the analysis of a relatively new type of written source, namely blogs.