Joshua Porter is offering a free chapter of his book, Designing for the Social Web. The book is geared towards web designers and developers, but this chapter has some great tips for what to put on your website or social network to entice visitors to sign up. Most importantly it shows you how to put yourself into the shoes of your visitors to understand what information they need in order to understand what your website is about and what they’ll get out of signing up. Next is understanding how the site works and how to sign up…. worth checking out.