I see an alert box with "Unable to figure out your location! Defaulting to New York City" when I load the page. It would be a nicer experience if you displayed this message above the map (or somewhere on the page) instead of a using modal dialog.

The site navigation links at the top of the page have very small hit-boxes and provide no indication that they're click-able (other than the mouse cursor changing.) Its harder than it should be to click these items.

The "Category Filter" and "Hide Result List" links are even more confusing since they display a text input cursor instead of a link cursor. This problem is also present on the result title links.