Well, as it is, I have read very little manga online so my above evaluation was very hasty and based solely on the chapter 13. The other streamed manga I've read is from Mangastream (Soul Eater) and it's a lot better than this dismayingly small, dirty, and compression artefact filled Vivid. Although to be fair it could be totally the uploader's fault and Mangafox could be innocent. No clue.

Hmm... Now that I had a look at chapter 12 on my HD, I have to admit it's certainly not fully chapter 13's own fault. But nevertheless, the lack of quality does annoy me.