Create a pull request with either your addition to an existing metaphor or your new metaphor in /metaphor in the following format:
---
title: Name of the Tech
...
<M4Definition source="{source name}" href="proxy.php?url=https%3A%2F%2Fgithub.com.%2F%7Blink%7D">
{definition as quoted from the source, markdown accepted}
</M4Definition>
<Metaphor id="{some unique id}">
<M4Title>{title of your masterwork}</M4Title>
{content of your masterwork, markdown accepted}
<M4Author handle="{your handle}" href="proxy.php?url=https%3A%2F%2Fgithub.com.%2F%7Blink+to+you%7D" />
</Metaphor>
Markdown is accepted almost anywhere, even outside the tags themselves. Avoid leading spaces and indentation-- they are honored as markdown. :-D
Suggestions and improvements are always welcome. Let me know what you think. Cheers!