Great review, btw. I actually recommended "Tav" on my blog but can see merits in "X and Y." Your reaction to "Entanglement" was very nicely put. (I was most disappointed by that one in that it was very science fictional but not the best execution.) It looks like we read "Skychildren" in exactly the same way - fantastic setting and plenty of concepts to go with it, but not enough story. I am really excited about Compelling as a new(ish) source for science fiction, though. And I'm really excited that you'll be helping us out at Tangent. Great start!