I'm going to be brief.
Here are three examples of people hitting this niche and making plenty of money.
Seduction.com -- Hits the need of men who want to learn how to "pick up chicks." Crude, lewd and some of the best copywriting for a specific market I've ever seen. With seminars and product sales, I have no doubt that Ross Jeffries is making 1/2 a million a year with this.
Leil Lowdes-- Author of a number of books on "How to make anyone fall in love with you" type titles. Also does seminars. Recently I saw a full page ad for a mail order course on How to develop rapport (or something like that) in Psychology Today magazine. Those ads don't come cheap. I bet she's making a bundle.
"It's Just Lunch" dating service. Don't know too much about this company, but I've seen them advertising for quite some time now in weekly papers all over the country. (EX. LA Weekly, Austin Chronicle). You pay them and meet for lunch with 5 members of the opposite sex and 4 of the same sex (5 men, 5 women... or something like that.) I don't know how much they charge, but I'm looking into it and will report back. This is a business model that-- while service intesive (Read: Can't get away for a vacation)-- has pretty low start up costs except for marketing.
Good luck,
Adam.
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