We are already submiting blogs and website in digg and our employees are expert in writing and submitting in digg and bringing huge traffic. I would not speak more but you can receive more than 5000 visitors for a single day but not sure how many buy your product or service depends on your page content (onpage factor)
We are experienced SEO Company and have a team of 50 employees specialized in the SEO industry. We are are having 3 years of successful experience in field of Search Engine Marketing and Search Engine Optimization.