I always find this topic to be interesting. Lets share how much percentage of your traffic is from social bookmarkings like SU, Digg, and all.
I have a website that can't receive traffic from such source as the pages are self promotional. But now, creating a website mainly to pull traffic from these sources. I hope I'll do it
I'd say mine is less than 20% but it's ok coz I'd rather have organic traffic as my major source of traffic
The traffic from social bookmarkings is less than 10 percent to all my sites and I have never tried to give it a boost because I consider them as crap. I want more and more of targeted and organic search engine traffic.
For most of my sites - almost nil. I see benefits of links from dofollow sites in SERPs, but direct traffic is rare.
It's less than 2%. Nowadays, I rarely put effort into social bookmarks due to the low conversion factor.