CodePen - A front end web development playground.
Goodreads - See what your friends are reading.
Pastebin.com - Pastebin.com is a website where you can store text for a certain period of time.
LibraryThing - A home for your books.
Logpasta - Logpasta is a simple to use CLI-based application that allows you to paste your posts.
BookAuthority - BookAuthority collects the most recommended books on business, technology and science - as featured on CNN, Inc and Forbes