I'm downvoting your comment because on technical posts the top rated comment is damn near always of zero value and only serves to make the commenter try to sound smarter than the post author. The more in-depth and complicated the post the more those type of comments appear.

This is a nice little post that reasonably describes a technique that has been used by a fair number of professional, commercial products. That anyone would try to downplay it to make themselves feel superior is silly.

To provide some actual value, most of the the images in the post are actually interactive. It's pretty cool. I somehow read the whole thing and didn't notice.