yes, specially if the link has good ranking for your target keyword, there is a high possibility to get traffic.
Yes ,Yahoo Answer beneficial provide the traffic to the site . But if it is according to the yahoo rules oherwise yahoo banned the ID .
Yes it can but you still have to consider a good answer for people to view your website. People are looking for answers that is why its important to answer their questions if your site is relevant to their question otherwise, whats the point.
Yahoo answers is a great way to targeted and long tail keyword traffic,,try not to spam yahho and use ur links accordingly
yes, can get very less traffic, according to my opinion, yahoo answers are not so affectable. But can get few hits.
Yes it does but you'll need to answer a lot of questions and preferable need to be on level 2 or more.
when u increase ur level automatically ur answers will be taken. post ur link(only if its appropriate) to the answer.
I get only 5-6 visitors from yahoo answers but top of blogs and Blogtopsites give me a large number of traffic on my blogs . Thanks