I'm running late with my stitch for TAST, so will go ahead and post my free-form cactus in bloom, to show my example of a linked double chain embroidery stitch. This thing just evolved, as I am also a member of Teri's Cactus Monday and would have posted this on a Monday, but am behind schedule. So...here it is anyway.
In regard to this stitch, I myself am hard pressed to find any good use for it. I do have to say that I think it sort of looks like raffia to me, and also that it is a good fill-in stitch, and that it can end up looking amazing at times, as evidenced by all the other wonderful stitchers who show their stuff over at Pin Tangle!
My final thought on this project is that even though I really had a time with this stitch, and harbored bad feelings toward it, my cactus ended up looking kind neat (to me). I'm just sure it is done all wrong, but I hope you all enjoy it!