How Old is Your Mustard?

Read a quick article today on shelf-life of foods, once opened, in your fridge. Roast chicken was 5 days, deli meats (which there shouldn't be any in your fridge anyway!!!! ) last 2 days, yogurt was 5-7 days....

I ask you how old is your mustard and how long does it last? Doesn't it last forever??? Apparently 3 months is the max time it should be in your fridge. First thing I'm doing when I get home is throwing out my mustard. I use dijon mustard weekly for making quick salad dressings so that one will stay, but the good ol' French's yellow mustard has been there quite a while - at least since last summer when I bought it for a BBQ we were having for friends!