Thanks for sharing, I will submit my site to these social sites.
I don't really get why people submit to tons of social bookmarking sites, like other social media sites. SB sites are meant for interaction that's why people vote for nice stories, If we don't know how to interact inside the network. Then our submitted site will just be buried deep.
Do Follow Social Bookmarking are hard to find nowadays, I think most of the social bookmarking will turn into nofollow links later