Should you make opportunity seekers pay to get into business?  

In my three years online, I've gotten lots of people sign up free for my various affiliate programs. But, most turned out to be freebie seekers and not really interested in doing the work involved. It was almost as if they saw the "free to sign up" line and jumped on it for the freebie factor.

People who sign up free rarely do the work required to build a business. That's been my experience anyway. And, I would love to be proven wrong on this issue. If I could get some hard working dedicated business people in my downline, there's nothing that would make me happier!

Sometimes I would think it wiser to make someone pay to get involved in a business opportunity. That way the person signing up would have to justify the expense and might at least attempt to work to earn their money back.

What do you think about this issue? Do you think it's better to charge money to someone who wants to get into your business, so you can test their level of interest? Or, do you find that freebie sign ups really do work? If so, please share your best tips for actually finding qualified referrals.