"So the advice is read 50 pages to see if you like it and then quit if you don't? Or some people say, read 100 pages minus your age. Older people don't have as much time left to waste on bad books."
I learned (again) how valuable her advice was, after I forced myself to read all of Virginia Woolf's "Mrs. Dalloway".
Are you a reader? Check out goodreads.com - it's a social networking site (sort of) focused on books. You connect with your friends & write reviews for the books you read, then you get updates whenever any of your friends read a book, or add a book to their list. I'm loving it. I love tracking what I read, and I love seeing what my friends are reading - I've added a lot of interesting books to my list based on friends' recommendations. Goodreads came along at just the right time for me, when I was fed up with reading mediocre books because I just didn't know what to pick up next.