Save A file Works for me. If you want to share or even sale a e-book or other pdf file. You can store it with them for free! They even give you a FREE link for people to download your file. You don't even have to register! Take a look at their FAQ page. For an example of how it works, take a look at my free downloads (in the left side bar).
Visit Rocks In My Dryer for more WFMW ideas!