I’m kinda with Scott, except most of my glue experience is with Titebond I & III
(although I do have an 8 ounce bottle of Elmer’s Carpenters Glue that is very
old) and very limited with hide glue. I go through a lot more Titebond III but
I’ve had a gallon jug of Titebond I for at least 15 years and it’s still good as
new. The gallon jug resides in a cool dark corner of a closet and I put whatever
I need for a project in a small jar. Stored properly, I’m of the opinion that
the whole expiration date thing is nothing more than a marketing ploy.

Stephen 
San Francisco