What Has Happened To Fractal Image Compression?

Dennis Thrysøe asks: "In 1995/1996 Iterated Systems (Michael Barnsley) made a program that compressed/decompressed images with fractal compression technology. It was for real, pretty fast and really worked. It was even free, except if you wanted to make your own program, that compressed images from the libraries. What on earth happened to this field of technology? You can still find the same old version of 'Fractal Imager 1.1', but has it been developed on since? Has anybody else implemented anything (open/free) that really works? Fractals / Iterated function systems are REALLY amazing for compressing images, but why aren't they being used more?"