Perfume companies should do what Villeroy & Boch (crockery etc) do: allow you to register your favourite fragrance and if they decide to discontinue it then they will notify you...giving you enough warning to purchase another bottle or two. This is especially important if the fragrance is the one you wore at your wedding. If they discontinued Shalimar (I think it's been around sice about 1940!) I'd certainly buy up big! They say you should use perfumes within 6 months of opening... but who does that?