How To:: Inbound Marketing 2011: The 9 social media, content marketing, and SEO articles your peers shared most

How To:: Inbound Marketing 2011: The 9 social media, content marketing, and SEO articles your peers shared most: More companies realized in 2011 that content marketing, SEO, social media and website optimization can be combined to create a powerful strategy. One year into our Inbound newsletter, we're looking back at the best examples we found. Inside, you'll find links to more than nine case studies and how-to articles highlighting the Inbound Marketing newsletter's most-tweeted articles of the year. We comment on trends and point to resources to help you measure Facebook campaigns, avoid Google penalties, and improve your content marketing.