Some examples of successful inbound marketing campaigns include:
Hubspot's "Inbound Marketing Methodology" campaign, which provides a step-by-step guide to inbound marketing and has generated over 100,000 leads.
Moz's "Beginner's Guide to SEO" campaign, which provides a comprehensive guide to search engine optimization and has generated over 1 million visits.
Salesforce's "Small Business, Big Impact" campaign, which provides resources and tools for small businesses to succeed with inbound marketing and has generated over 30,000 leads.