There is very little information about poetrynook on its own site. Even on the forums, the most we get is that it was on Duotrope, but was then removed from Duotrope. That's a big ol' red flag to many potential submitters. If you had a page that explained what poetrynook was, who was behind it, and why it was created, I think you would find a greater number of people visiting the site on a regular basis. I know it would put my mind at greater ease.
There needs to be an "About" page