Listography is a site devoted to - you guessed it - lists. You can sign up for a free account and make lists related to any old thing you want. Many of the lists are related to books and music, such as to read, have read, recommended by friends, and many others. Some folks have to-dos (I noticed "finish library books and return" on one), places they'd like to visit, even memories about particular good times or people they miss. Listography is a handy tool for making lists, but more than that, it's interesting to see what other people highlight on their lists.