In the example in Today's New York Post, the bidding went: S 1 spade, N 2 clubs, S 2 NT, N3 spades, S 4 Spades (East and West passed throughout).
West led the 9 of hearts, which as between these defenders, meant "top of nothing" in a two or three card suit, probably looking for a ruff. With A732 of hearts, East signaled with the 7, got a heart lead to the ace when West came in with a high spade trick, and led back a heart for a ruff.
North's hearts were KJxx. Suppose East had the QUEEN of hearts instead of the ace, but the ace of DIAMONDs instead. With a supposed "stranded" honor (assuming West's top of nothing lead denied the ace), should East have DISCOURAGED on hearts and have West lead a diamond?