#1. "RE: Online dating website...Is it profitable?" In response to Reply # 0
The competition alone would be nearly insurmountable. And the costs would likely be prohibitive. The type of website needed for this would cost tens of thousands of dollars to create.
Maybe rethink the idea into more of a matchmaking business. Match people up for a lunch date business model.
But as BizResearcher said, the liability issues are a whole other monster.