What do you think about offering both a raster version and a vector version of the same image? Is that allowed at iStock? Would you recommend doing that? I have some drawings that I have scanned that sell well at iStock as raster images. I'm thinking about uploading vector versions (livetraced) of those same images. I know the controversy over auto-tracing. That's not my dilemma. Just wondering if you see any problems with this plan of offering the customer a choice?