I am soooo happy to have found this excellent knitting hack! It is easy to understand and implement. Sometimes you need just one more row in your pattern and there just isn't enough yarn, so with this type of Bind Off, you get that "bind off with good behaviour"....no more epithets, no more pulling of hair, grinding of teeth!
Sapphires-n-Purls: A Knitting Blog: Yarnless Bind Off:
Another hint to add to this is, if you know that you are going to use this excellent bindoff, and you need a stretchy edge, I recommend that you knit that next to last row on larger needles to get more ease in the YBO. This has 'saved' my sanity, for sure!