Tapping a question goes to the question's page, initially blank apart from the title and tags.
Quite often this page remains blank for long enough to make me doubt whether it's actually loading or has lost connection or frozen in some way.
If the activity indicator on the status bar were active while it was downloading the content, then I'd feel a lot better about it.
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
Alternatively, reuse the "Refreshing..." indicator, but with the text changed to "Loading...".