A few more pricing possibilities:<p>- The StackOverflow careers approach: a posting costs $X until some date, then $Y after. Y &#62;&#62; X. This is similar to your free beta idea.<p>- Charge per applicant. Maybe $10 to post, first application you receive is free, then $10 per application until you reach $100 (or some other level). This is nice because you no longer need refunds (poster only loses $10 if no one applies), and also as the site becomes more useful, postings cost more =).<p>Re: spam prevention -- I agree with you. Letting anyone view but only letting registered users apply is a good approach.<p>Re: your motivation -- nice. Reference and portfolio checking are pretty useful.