Someone asked me recently what BAM is and I liked my response so much that I'm posting it here:
BAM stands for "Business as Missions." The idea is that we do business as a way to do ministry in a foreign country, particularly "closed" or "creative access" countries. It is NOT "business as a front for missions" or "business with enough Christianity to raise funds from Christians" but real mission work accomplished through real business.
Actually, I don't think BAM is (or should be) limited to foreign fields. I think BAM could mean "Business as Ministry" even in our home country and be an effective way to reach people who would never come to visit a church out of the blue.