Does your style.css file have something like this at the top, customized to your theme?
/*
Theme Name: ! Startups in Boston
Theme URI: http://bostonstartupsguide.com/
Author: Jay Neely
Author URI: http://socialstrategist.com
Description: Theme for BostonStartupsGuide.com. Initially built using Whiteboard Framework (http://whiteboardframework.com), redesigned using HTML 5 Boilerplate and inspired by 960.gs.
Version: 1.0
*/