Originally posted by: Chrysophylax
Here finally is my full sized cover:

You know what would make your cover even better (and I already like it a lot)? Making it available as a PNG file instead of JPG.

JPG is lossy, while PNG is lossless. You've got a lot of very sharp, graphic text on a solid black background, which is exactly the sort of thing PNG is great at compressing. Inevitably with JPG you will get some parts NOT being all the same colour.

PNG compresses things more like ZIP does: you can either compress it a little, which is fast; or compress it more, which is slower. But in both cases, ALL the information is kept.

I'll bet that for your cover, a completely lossless PNG version could actually be smaller than a minimally-compressed JPG version!