Yep, I was aware of the other uses which is why I'm going to experiment on myself first (I have a titanium stomach). I'm no chemist, but I believe the term for this is a "hydrophyllic" compound meaning that after you disolve it in cold water, it takes a little time for it to fully combine with the water molecules. As I understand, the laxitive properties are effective if you disolve it in cold water, drink it, and it then gels as it warms up and "hydrates" in your system. Being a celluloid compound (derived from plant cellulose that's not digestable), it acts to "move things along."
Among the "molecular gastronomists" (which I am not, BTW, I'm just a foodie who watches too much Iron Chef), I understand that you disolve it in cold water and let it sit overnight in the fridge. It will "thicken" the water as it fully hydrates. Then, when you warm it up it gels to a jello-like consistency. Voila, "hot jello." Apparently, it's quite the rage to try to make "hot ice cream." Even weirder, it melts as it cools down.
Inspired by an episode of Dinner Impossible (the one with the Vegas magicians), I've got an idea to have a dinner party where everything looks like one thing, but tastes like something else. In that episode, Irvine made a "chocolate cake" that was essentially a high-end meatloaf and a "hot dog" that was actually desert (ice cream hot dog, jello tomatoes, shredded mango sherbert for cheese, cake for the bun). Like I have said, while I like "simple, natural, old fashioned" food and have nothing against those that eat a "purist" diet, what I'm going for here is the unique, bizzare, and innovative.
That being said, and in light of the tacit accusation by RSteve, let me document something publicly: I do not intend to "sneak" this in on anyone - period. I'm just a home cook and I know my house guests well enough not to give this or anything else to anyone who might reasonably expect to have an adverse reaction. I say again, I am not going to be anything but transparent with my friends that I feed.