Maybe it looks for a certain browser string and hides itself otherwise? I knew of Wordpress malware from last year that would never show to logged in users.
I recently moved from Long Island to Boston. Would love to get coffee with you sometime when I am down there visiting family. I moved as the commute from LI to NYC was brutal and I felt there were better job opportunities in Boston. I'd love to pick your brain sometime about the status of the island and NYC.
*actually, it looks like you've been compromised. There are spam links all over your home page.
http://www.johnmurch.com/projects/noteparse/