I posted a link to Yahoo Answers I don't remember when but it's probably more than six months ago and I still get visits from this link each and every day. So, even while Yahoo Answers are no follow links they sometimes are worth the effort to answer a question ;-)
No, it is "rel=nofollow" but there's some benefit in posting on Yahoo Answers. You can gain tons of visitos to your site if answers with your niche. Yahoo answer posts also get indexed very quickly.
your site is indexed very fast if you have links on yahoo answers. Even they are no follow they are good for geting authority for your site and popularity.
yahoo source links are on no-follow attribute...however the good thing to submit link on yahoo is its generate more traffic .....
Yahoo answer is no-follow. There is a Firefox add-on called "NoDoFollow". You can find out what are the dofollow and what are the nofollow links using that add-on. >>> How to find Do-follow and No-follow links >>> Firefox NoDoFollow add-on But create backlinks using Yahoo answer because of you can get some traffic. I also follow this method. Good luck!
when you search link:XXX in Yahoo you can found many links from blog's nofollow, So I think Yahoo is no Distinguish dofollow and nofollow