Guestbook app project working through the <a href="http://www.amazon.com/gp/product/1937785645/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1937785645&linkCode=as2&tag=hubp0f2-20&linkId=4ZGKEHD2LYJ5DILJ">Web Development with Clojure book</a>.