First up: OPEC said in no uncertain terms it won't scale back oil production. So oil prices keep dropping, and the U.S. is sort of an unwitting member of OPEC. We'll talk about what that means. Plus: If you're stuck in an airport this weekend, tweeting could get you the last seat on the next flight a lot faster than running to the counter. Finally, Marketplace Tech host Ben Johnson joins us to talk about security on the upcoming Cyber Monday.