Just how long does this stuff last for, and how do I store it?

I heard a mention here at SRP hat it lasts about a year, but Googled some horse and tackle forums and some say almost indefinitely?

It was on my Christmas list...and I already found out I've got a 32oz. jug and another 8oz. bottle on their way, LOL!

As a side note, I'll be bringing it to the next Toronto meet up for distribution (bring your own cups!)