Thanks to a crop of niche dating websites, you can find your ideal mate based on very specific criteria.

The online dating industry is a $2.1 billion business, with niche dating sites claiming more and more of that market share.

We talked to the men and women behind niche dating websites to find out what makes their crazy ideas so successful.

From simple revenue models to familiarity with their customers, niche dating site creators believe they have a handle on their specific market.