I found this article and liked it because it gave me a lot of information about the Beale Cipher and treasure, even more information than Singh. I especially was interested in the reasons describing the possibility of it being real or a hoax.
This blog post was a very entertaining and read. The concept that the reason people get scammed because of their strengths (trust in authority/desire to follow) and not our weaknesses is a bit mind boggling. It was very well written and kept me interested throughout the entire post.