Anyone know of a good ESL teacher’s forum?

There are quite a few, but many are commercial and pushing their own school or products. One good one is dave’s esl cafe, and there are some listed under “lesson plans” websites. To get hard core about it, I suggest also joining a professional association. Locally there is the Australian Applied Linguistics Association, the Victorian Association for Teachers of English etc. They have great publications/newsletters/contacts/ conferences. have fun