So you heard someone talking about Ruby on Rails and it sounded like a Merle Haggard ballad — and then you found out it was a Net platform? And you’ve always wanted a plain-English explanation of SEO, CSS and cloud computing? You’re in luck. Poynter has posted a glossary of Internet terms that every digital journalist should know. And even if you don’t “need” to know, imagine how impressed everyone in your office will be when you throw terms like metadata and data visualization into the conversation.