You put a link in Yahoo answer, in a forum sig, or on Digg - and you can find them ranking in Google then.
Well, you would regularily want to find what you actually link to, not the forum thread with your signature...
Yahoo answers is Nofollow and won't help rankings, forum signatures are low quality with typically 100's of other outbounds and Digg links don't hold much weight. You may want to rethink your optimization strategy.
I DID found all these in Google, on 1st-2nd page. Google does not follow the link in Yahoo answers, but it follows the title or content of the question, asked there. If your link is connected with the topic, you can expect someone will click on it. I can't provide any statistics of traffic, but my point was, that Y! question/answer may rank, so your link will also rank. It's just like with external links in Wikipedia.
Yahoo answers definitely works, but not as a quick thing. You need to make sure you provide well thought out and helpful answers. If you can get chosen as best answer, and your resource is something that people will find helpful, you should get some highly targeted traffic. Matt
The Yahoo pages will rank yes but not yours, i'm in the business of making my site rank not other peoples.
Yes, you can get direct clicks on the link there. And the Y! question with appropriate keyword phrase may rank in Google beside that. Here are Google results for stomach burning. If you use CTRL+F, you can find yahoo answers, forums and, OK, stumbleupon. Yahoo page with your link will rank, so your page will "rank" along with it.
Out of the 100 people that click the Yahoo Answers URL, maybe 1 will click your link. Why don't you rank your page there and get the 100 visitors instead? The term has only got 309k results, you will probably beat Yahoo in a couple of hours from building the page.
Ranking health sites is hard. There are "national institutes", hospitals, health forums..., which are mainly big and old sites with high PR and a lot of backlinks. But yes, sure.