I'm not planning on making Fiction Techniques #3: The Twist Ending, free. It's just 99 cents, though. It's a brand new piece that goes into detail about how to create twist endings, for both stories and for novel chapters that can be used as cliffhangers.
Anyway, if you are interested in writing and haven't gotten your copy of "Characters Wanted," it's up free right now, and will remain that way a couple more days.
Have a great day!