This site allows you to share documents online easily. Instead of having your documents in your computer, you can upload them here and share them with other people; it is like a big online library where everyone can publish original content. You can sign up and create a free account that allows you to upload documents, create a profile and receive comments on the documents you have posted. In order to do so you only have to provide a user name, a password and an email address (optional). If you don't want to sign up, you can upload your documents anyway; jus click upon "upload now". You can also read and comment on other people documents; just enter a keyword related to the information you are looking for and a list of documents related to your search will be displayed.