Influencers are influential. They have a significant following on their social channels and are so knowledgeable about a topic that people not only like to consume their content, but share it. Engaging an influencer and being promoted by them is a great way for your brand to increase visibility, grow a following, and rank in search.
A justified panic gripped the SEO industry after word got out that Google Webmaster Tools has an extremely serious technical issue – old user accounts are automatically getting re-verified and given access to sites they shouldn’t have access to anymore. The first post I read about the GWT stuff-up was on Dave Naylor’s blog.