Phew! What a month for the SEO industry and the SEJ during May! In this post I’ll be summarizing the top 6 articles. #1 – We experienced another Google Penguin update http://www.searchenginejournal.com/google-just-unleashed-its-penguin-2-0-update/63868/ Not only did this shake the SERPs up, but we also learned the difference between a data refresh and an algorithm update. How Author informationJohn RamptonManaging Editor John Rampton is an entrepreneur, full-time computer nerd, PPC guru at Maple North and founder at PPC.org.TwitterFacebookGoogle+LinkedInThe post Top SEJ Posts For The Month of May by @johnrampton appeared first on Search Engine Journal.