My classes don't need to write

It's a strange thing but most of the classes I teach are adults not interested in writing. Thus all the writing they do is in the way of record keeping, memory jogging and such like for their language classes and I don't tend to emphasise written grammar, spelling and so on. How can this be, I hear you cry? Most of them need English for their work meeting and greeting, answering the phone and lately, reading technical manuals and instructions. Therefore blogging doesn't seem appropriate to them unless audio blogging becomes cheaper and easier.