Big Stitch is not new, it's always been around, just didn't have a "proper" name. Some people have referred to it as a utility stitch. Billie Lauder has put out a book titled "Quilting in the BigStitch Style" (one word). It is a small book, but has what you need to know. Somewhere I read that she gives credit to Jo Glover for teaching it. An excellent tutorial is "How to Big Stitch Quilt Like Lorraine Hofmann Slide Show" at TheBlueCatCreations.com , Blue Cat used two words. On 12-10-1011 there was a discussion on here in which Jan in VA discussed how she does it.
I love the looks of it for the texture it creates.