The most interesting people will be able to add something to almost any topic that comes up in a discussion, and they'll have a variety of perspectives to share.To make a very sweeping generalization, women (geeks and non-geeks) like men who are strong conversationalists.All the people around me like to talk about those topics.
After all those years being single I am getting frustrated by this.
I've done more than my fair share of dating both online and offline, so I can share some insight.
If that is really the extent of your core interests, I encourage you to expand your secondary interests into other areas of human life that might pique your curiosity.
You don't need to love the humanities the way you love the sciences, but keep an open mind.
They even once had Richard Hatch of Battlestar Galactica fame interview me and my at-the-time fiancee about how the site helped us meet.