Princeton children’s bookstore Chicklet will close at the end of the month, as their landlord turns the space over to a tenant paying market rent.Princeton Packet In the same week that Figment.com has launched, Harper UK’s book social networking site BookArmy indicates it will close December 21. The Bookseller says an email to site members indicated “the decision has been made to close the site, after facing strong competition from similar sites and fewer advertising opportunities in such a tough economic climate.” The company tells the magazine that staff will be reassigned to their site Authonomy.