Well as a fractal artist for a number of years I have only actually posted them on my web site and here at Renderosity however just like any image art form they have a place. I see the opportunity for the sale of a fractal image as a unique item. But like you said about the publishers tastes in fractal imagery that is a fickle subject to ponder just like entering "any" artwork on a regular basis in a gallery or competition event. It just depends upon the people that it is exposed to at the time and where or in front of what type of audience. I would suppose that most importantly a little thought and planning would have to come into play in order for an artist to get that form of digital art out in front of the selective audience for the purpose of enticeing them to buy. But now-a-days fractals are recognized as anything from cloud formations (objects from life) to 3D layered digitally produced mathmatical algorithms on the scientific level. Then you have fractal geometry translated to pixel color content that look more like they are from the 1970's in the software engineering class but original never-the-less. And then fractal art only stands on its own if it isn't taken to other degrees, there are excellent examples that show up everyday on Rederosity that the artist has not only generated a fractal geometric image in liear and non-linear form but has also encoorporated that into an entirely different thing like any artist might utilize objects, images of objects or images from life in Photoshop collaging all of the parts of which combined still reflect the fractal origins yet dirive at a separate artistic end visually. In my personal opinion thought the word mainstream would actually cause a slight jump back to earlier fractal visual manifestations since they are the most familiar to the "mainstream" in an instant's sence upon sight anyway. The only difficulty with that perspective is the fact that image size and resolutions were slightly limited up until the past five years or so and therefore a lot of it still remains unpublished unless someone gains access to original project files and or renders that can "by plugin" digitally expand the render to print resolution sizes. Congratulations on getting on the 2005 fractal calendar cover. I entered in one opportunity maybe it was the same and tried submitting an ArtMaticPro fractal sample but did not make it into the selection. Its what the viewer at "the moment" likes that dictates the demand and that can vary like the changes in weather here in Colorado. :)