I have come across a fairly new text link marketplace called Linkshowoff
which allows you to sell text links on your site or blog. The process
of selling links through Linkshowoff is simple and requires only little
effort on your part.
All that you need to do is sign up as a publisher of Linkshowoff. Your site will then be listed on the directory of Linkshowoff. The advertisers will come and visit Linkshowoff's directory. If they found that your site is fit for buying text links, they will pay you to display a text link on your site.
The advertisers’ text links that display on your site will carry the 'nofollow' attribute. So, you don't need to worry that Google will penalize your site because of selling text links.
The minimum payout is $10. Once you have earned that amount, you can request payment makes to your PayPal account.
Linkshowoff also has a referral system that rewards you for referring new webmaster and blogger to join Linkshowoff. You will be paid $3 for every referral that earns $3.