I just recently discovered this, and it's so awesome! I saw Leslie Blodgett do it on BE QVC a few weeks ago and I immediately bought the brush she used on eBay. I have always struggled with powder eyeliner, and now with the flat brush, it's so easy. For those who like a smoky, heavier line, the "push brush" technique would probably not be the best bet; but since I like a very light line, I love doing it this way! I sold my old liner brush to my coworker (also a BE fan) and she was as happy as I was to get a new toy!