Yahoo answers backlink is good enough for creating discussion on your site among yahoo answers visitors, nothing more than that, no PR effect since it is a nofollow
The Yahoo Answers will only bring traffic to your site....That is I think the greater contribution about Yahoo Answers...
The links from Yahoo may help your SERPS (as Matt Cutts says about no follow doesn't necessarily mean it doesn't count at all) but it wont help your Page Rank for sure.
Yes! Important note: Help someone in Yahoo Answer if you can by your hand and intelligent. The points of pagerank is not deals. That is important that you help them and you can get more than that.
If your website have more information about topics they are interested, so they will type your site and go instead go to Yahoo answer by million question and waiting ...
Ya, you are right ! Yahoo Answers only help in bringing extra visitors to your site. But they don't affect PR at all. - Digital -
Is that ture? and another question. some of my blog have been add "nofollow". and if there is need for me to go on with these blogs? thank you.
Yahoo! Answer is no doubt best site to get lots of referral traffic but it does not give any PR juice to your website.. But PR is not important, most important is traffic because traffic is which gives you some $ and not PR.