Dmitry Dragilev is founder of JustReachOut.io and Criminallyprolific. Some of his feats include: helping a startup from 0 to 40million pageviews (acquired by Google), helping a company from 0 to 5 million users (acquired by AVG), and he got 60 leads in 24 hours with just a landing page and a linkedin group.
http://www.inspiredinsider.com/dmitry-dragilev-one-question-inspires/