On reading manga

I was going to put this question into a private email conversation, but then it occurred to me it'd be more fun to ask everyone.

The topic of the BACKLOG OF DOOM (I don't think those capitals are dramatic enough) came up in a comment thread recently. I will probably have more to say on this as I rebuild my shopping list (ah, did I mention I got my tickets for Japan in August??), but in the meantime, I'm wondering how many manga a typical mangivore consumes in a week or a month.

( This gets long, but to cut to the chase: how many books do you read in a day/week/month, and how long does it take you to read each one? )