That being said, there are two things that I want to make clear:
Most of the content you try to promote through social bookmarking won’t get much exposure. You might have to submit 20 pieces of content before one generates 10,000 visitors to your site. But when this happens, it will certainly make all the difference.
The traffic that comes from these sites converts very poorly. If you get a 0.1% conversion rate, consider yourself very lucky.