I know the guys that started a site like that. Pretty cool idea.

Pay per Call Home Based Business - PremiumTalk

You can basically set your price per minute and add a call me button to any website. The caller never knows your phone number nor do you know theirs. You could start a prayer line, psychic hotline, algebra tutor...whatever and give advice for a fee. You set the hours that you will receive phone calls. Also cool if you have a business.

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Prayer is the burden of a sigh,
The falling of a tear,
The upward glancing of an eye
When none but God is near."