I'm pretty sure I have seen a discussion of this one time or other, but since the problem still exists I thought I would mention it again.
Chowhound behaves very badly on my iPad. When I tap on a thread to read, if goes to the thread which is briefly expanded. Then it goes back to the closed posts, which dance up and down about four times before they settle down reliably enough to be able to tap on one. I have learned my lesson by tapping too quickly and going to the wrong post, going back to the main thread, and then having it happen again. Now, I just sit on my hands until the blasted thing stops bouncing around. It's very annoying, and it makes CH a pain to use.