Spencer might not agree, but why not go at it alone until you find the right person? If you're driven enough to start your own company in a space you know a lot about, you should be driven enough to do so alone, at least temporarily.
Perhaps I'll make it past the point of needing a cofounder at all and will instead be able to go directly into hiring salaried employees. Of course, getting this far on my own would also be pretty lucky.
You can do the lone wolf thing, and then just come post on HN or some other community site to get your feel of human interaction