Business/website idea: OKCupid for jobs, or possibly just for co-founders.

Different workplaces have different cultures. There are probably a wide variety of cultures that work, but mixing different cultures in a workplace leads to conflict. For example:

• Suits or jeans?
• Hands-on management or delegation?
• Flexible telecommuting or rigid office hours?
• Work 60 hours a week or 35?
• Prefer to keep social life separate from office or integrated? Office romance approved/disapproved?
• Is highest status given to engineering or sales or management or who?
• Is the focus on maximizing profit or creating value for the world or what?
• Is the focus on an exit (like an IPO or acquisition) or a lifestyle business?
• Risk-averse or risk-seeking?
• In software development, programming-conservative or programming-liberal?

An OKCupid-like system of asking questions about one's preferred work culture might lead to good matches between co-founders and possibly between workplaces and employees. (Though, of course, there are many non-culture-related considerations that this kind of system doesn't evaluate. While that's true for dating too, it might be even more true for work, making this system less effective.)