JPEGmini compresses file size not quality

JPEGmini has a new technology to compress the sizes of JPG files dramatically without quality loss. I took it for a test drive in snow-covered Amsterdam. My file was reduced from 2.4MB to 0.4MB and only by zooming into the image (click on the second image) you can see a slight, but only slight loss of brightness (can you tell which one is the original?). A pretty impressive result. The question is whether the JPEGmini offering will stay free, and whether will get used to adding another step to an already complex image processing workflow (find image, save it with key words, crop/extend for presentation, adjust dimensions, save Photoshop file, save for web, drag into presentation).