Yes, that's my experience. Some sites get you traffic but no backlinks. And at the end of the day, traffic is king!
If you submit something that people will be interested, they will promote it, and look at your site, and obviously that's a good thing. but you have to do it right.
Yeah that is true, but i think all we need traffic only what will you do by getting only PR not traffic? So for traffic and business Digg is good.
Ya that's rite it's nofollow attribute but traffic is more important. Once u started to get traffic your work getting done.
Links from social networking sites like Digg have no effect in SERP. They just bring traffic into your site and help site gets index quickly.
I didn't find nofollow with the link. But there is rel="dc:source" with link. One can't say it's nofollow.