I am a Yale history grad (U.S. & Asian) and the creator and owner of an American History website, History 500 (www.history500.com) which attempts to identify the best history books for each of roughly 50 eras of American history, including WW I & II (over 500 books in total). Recommendations come from members and a 20 person advisory board of history professionals.  We also have links to most major historical sites, battlefields & museums. We are set up as a small private members-only club with a small lifetime fee ($100) and are growing slowly and steadily. We are interested in how we can use Social Media, Facebook, Twitter, Google to let people know about us and grow our base.