I have been using modules of universal algebras in my work, and plan to continue doing so. The following papers of mine use the concept: Enveloping ringoids of universal algebras. Dissertation, University Microfilms International, 1992. The modules of a universal algebra A are the same as the left modules of the enveloping ringoid Z[A] of the universal algebra. An appendix treats modules in detail, including restriction and induction functors, the centralizer of a module, and some important examples. Enveloping ringoids. To appear in Algebra Universalis in Day conference special issue. Summary of thesis. Maximal subalgebras of CM algebras. In review. Classifies maximal subalgebras of CM algebras (e.g. groups, rings, Lie algebras, lattices) into 7 types. I was disappointed recently when the concept, which I feel is very important, was never mentioned at the July UACT conference at MSRI. (Perhaps if Dr. Barr had attended...) William H. Rowan ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++