Definitely an option, but I don't know if most bloggers know the difference between vectors and rasters. I also think you would need to balance aesthetics and

Definitely an option, but I don't know if most bloggers know the difference between vectors and rasters. I also think you would need to balance aesthetics and efficiency. No one will use the browser image library if all of the images are just simple graphics. You'd still want some shots of nature, cityscapes, etc.