Possible to earn money on Yahoo Answers?

I saw a thread from Digitalpoint under the BST section, which a thread starter is looking for any quick jobs to raise money for his domain. There's one person who replied that he said CPA (cost-per-action) could make you money and you can promote products in Yahoo Answers, which he earned at least $10 daily through answering some questions related to his product. I am so attracted that I have my own Yahoo Answers account, and almost at Level 2. I could use this to promote products from NetPartner through my affiliate link. Yahoo Answers is a no-follow attribute, so I cannot build backlinks and perform real SEO there. Only that, I could maintain answers daily over and over again, just to be smart in answering relevant questions there.