Minor issue, but I've noticed (maybe since upgrading the ipad to IOS 7) that if I return to a long thread I am no longer being taken back to the place I was at, and now the screen goes back to the top of the thread? Just means it's a bit of a faff to get back to where I was on a very long thread.
I thought once you had 'posted' on a thread, then quit, the thread in question 'rose to the top of the pile' as it were. I use a 'proper' computer, Linux and Firefox; don't have a mobile, and couldn't be bothered with these tiddly little 'tablet' things! (Have been a touch typist since 1958, RAF National Service tape relay operator.)