Passions Network is a service that kicked off way back in 2002. It currently consists of 206 niche dating websites and boasts and impressive 2,7 million users. The interesting thing is that Passion Network can offer very, very specific datings websites, like for instance Stache Passions, Jewish Passions etc. It’s been noted that some of the sites initially get mocked due to their specific nature. Despite that it is that very thing that makes the network unique and is why people flock to it. Services of the network itself are totally free – it generates income via ads.