As we do on Snap.as, we should render Markdown in blog descriptions.
Most recently requested here, for the purpose of including a link: https://discuss.write.as/t/insert-a-link-in-the-blog-description/3468
Other Use Cases
This could be a shortcut to allowing Mastodon users to verify ownership of their blog -- what was supposed to be supported with T744: Support pinned rel="me" links.
Render basic Markdown and HTML for the description, including auto-linking URLs.
We'll likely want to limit the amount of HTML we support here (e.g. funky things like divs and iframes), but still support the "Other Use Case" listed above.