Ever since I saw this post, I've been obsessed with finding this stuff. I haven't been able to find it tangibly anywhere, and online it costs just about as much to ship as the product itself costs. But I just bit the bullet and found it here for the best price.
What's it for, you ask? Well, with this stuff you can make your own paper pads. Just stack papers together and paint the compound along the top edges. In about an hour, you have a personalized tear-off pad of paper.
And who wouldn't want that?