From the link:

"...my test liter of water took about 22 minutes to boil in a slightly breezy, 65-degree setting..."

I can get an 8 oz cup boiling over a regular Sterno in 18 minutes so 22 minutes seems a bit excessive, especially at $9.50 a pop. The smaller size looks like it could be useful though.

I'm a firm believer in the usefulness of Sterno-type products, especially in a 72 hour or a vehicle kit. I emailed Sterno once and they advised that the only byproducts you get from burning it is carbon dioxide and water vapor. No CO, and that's a good thing. And the 7 oz can of Sterno will burn for 3 hours.