According to my handy-dandy stitch dictionary, this is also called the “open chain stitch” or “Roman chain stitch”. This is a nice, relatively simple, geometric decoration. Because it has a straight edge, you can work it right on top of a machined hem to hide the machine stitches. (I believe in cheating.)
I think I learned the thing about tying the thread off over another thread from an aunt (great or just normal, I can’t recall). I’m just as positive that another aunt taught me that there were no knots in embroidery, ever. I don’t claim to be an embroideress, but I do think stitches are less likely to pull out if you tie off your threads, so I do.
Also, you can see the back of the stitch here – it’s a series of diagonal stitches. This is nifty, because it’s hiding my stitch line in front and binding my seam allowance in back. Two jobs done with one stitch – I love that!