Both Yahoo and MSN still follow links with the nofollow attribute and recent studies have shown that Google will still follow some nofollowed links, at their own discretion though. Even if a link is nofollowed, it may still pass anchor text and relevance to your domain as well, not to mention traffic.
50% of the traffic to one of my websites come from nofollow links. I don't care if it's helping the rankings. I care about the visitors and if they will buy my product.
it won't help you get improve your ranking, It will bring some good organic traffic for damn sure. It's nofollow it won't help you to get PR.
You can at least get Traffic from the no follow links. Also, crazy engines like Bing and Yahoo still give preference to no follow links
Ya yahoo is follow no follow links, Yahoo is highly recommended No Follow links, Apply these theme and use no follow data. Thanks
Here's a recent experiment showing that Yahoo and Google both follow nofollow links to some degree. http://www.seo-writer.com/blog/2009/08/31/look-who-follows-nofollow-links/
So much controversy behind this but in my experience most of my traffic is combined from nofollow links. PR > Nofollow in my experience but who;s to say for sure?
if Traffic comes by nofollow then sure ur site becomes expose and u may get additional links by the visitor itself
Yahoo really dont care about link attribute whether it is dofollow or nofollow. so build he quality link as much you can.