It very much depends. If your social bookmarks are highly visible and well followed and you have regular, fresh, unique and interesting content then you have every chance of getting 100+ visitors a day if you put the effort into maintaining social bookmarking as part of your marketing mix
Social Network will work for traffic batter then bookmarking like twitter is social network website and stumble-upon is bookmarking website
How do you guys get lots traffics from Social Bookmarking ? I'm getting about only 40 visitors per days from Social Bookmarking only.
Social Bookmarking is one of the best and easiest way to grab visitors, rankings and indexing. If you added new posts on your blog than try top 20 or top 40 social bookmarking for such posts.
Social Bookmarking Is the best way to get traffic as well it will also help you to index quickly by search engine you will also get backlinks by social bookmarking