Depends. When it comes to fanfic, I'm an absolute binge reader. If I find a story on the Archive, I cannot rest until it's finished. But I also like reading the installments on the boards, so that's sort of like reading a chapter or two every few nights.
When it comes to actual books, I just read a chapter or two every few nights. Of course, when it comes to Harry Potter, I just become a junkie and can't get enough. I soared through all the Harry Potter books in like a couple of days.
Jen