Planet13 - 7:48 pm on Aug 5, 2010 (gmt 0)
Wow! Thanks everyone for all the great suggestions and for bringing up all the things to consider.
I will think about it. Right now, after reading everyone's suggestions, I am tending toward articles that does allow user comments to be added (a blog, more or less).
As for the directory, I will probably allow it to grow organically. I have created all the categories / cities that I intend and am allowing users to submit their content (I know, not ideal, but time constraints won't allow me to go hunting for good sites). Then when a site does get submitted, I will just be sure to review it carefully before approving it.