In using my Glossary Plugin for Micro.blog, John Philpin has noticed that there are two types of double quotes, and that one of them does not produce a valid JSON file or object. There are double quotation marks (like on the keyboard next to the Enter key on my laptop) and double prime marks (think six minutes and 37 seconds 6’37”). If the wrong type of quotes are used, Micro.blog will not render a post using the plugin. A way to check this is to paste your JSON object into a site like JSONLint, which parses the text and can provide feedback on errors (source code for the app available here). Finally more technical info on JSON is available at JSON.org.