Embedding Content From Your Documentation, blog post

We have covered most of this feature in our guide at
https://docs.readthedocs.io/en/stable/guides/embedding-content.html, so I don't
think there is too much to add here. However, I think the blog is the right
place to promote this feature and share a little of its story.

I'd like to have an example of in-app UI tooltip, but the tool we built does not
look nice and I don't think we want to promote that as is.

embedding-content-from-your-docs.rst

@@ -0,0 +1,61 @@
+.. post:: June 23, 2020
+   :tags: embed, sphinx, sphinx-extension, api
+   :author: Manuel
+   :location: BCN
+
+.. meta::
+   :description lang=en:
+      Read the Docs allows you to embed content from any of the projects we host.
+      This allows reuse of content across sites, making sure the content is always up to date.
+
+
+Embedding Content From Your Documentation
+=========================================
+
+We are happy to announce we have built a solid Embed API.
+You can use it to embed content from any of the project we host, *anywhere*.
+The Embed API is a very simple but super powerful idea:
+*returns the content of a specific section from a particular document in a project*.
+
+This functionality brought us the ability to work in two different projects:
+
+:Contextualized tooltips on documentation pages:
+
+   We thought it would be awesome if we could add some extra context to a link within the same page.
+   This would help the reader to understand in a better way the concept linked,
+   without switching context and jumping into another completely different page,
+   and maybe getting lost or distracted with lot of new content in the document opened.
+
+   We had the concept already highlighted by a link,
+   we had the Embed API that could return the exact content of the referenced section...
+   *Let's add a tooltip with this content when the reader hovers the link!*
+   --and that's how `sphinx-hoverxref`_ was born.
+
+   ``sphinx-hoverxref`` allows the author of the documentation to easily add these tooltips,
+   customize their style, decide which elements will show tooltips and more!
+
+   .. figure:: sphinx-hoverxref-demo.gif
+
+      Example of ``sphinx-hoverxref`` on Read the Docs documentation.
+
+.. _sphinx-hoverxref: https://sphinx-hoverxref.readthedocs.io/
+
+:Inline help on our application website:
+
+   Usually, we think that adding a text in the UI is not great and we are tempted to avoid it if possible.
+   We try to reduce the words there and, in case the feature is big enough, add a link to the full documentation.
+   This pattern has worked fine over time, but it has the same problem of context switching to a completely different page.
+
+   Since we've started working on a new re-design of our entire application UI (more on this coming soon!),
+   we thought we could introduce the usage of the Embed API to add this extra documentation,
+   with small links next to the feature we want to explain without overloading UI
+   but giving the user the ability to have the exact contextualized paragraph for that particular feature.
+
+
+If you liked the Embed API and the use cases we presented here,
+you can `read its full documentation`_ to learn more about it.
+
+.. _read its full documentation: https://docs.readthedocs.io/en/stable/guides/embedding-content.html
+
+We think it's a super powerful feature and we encourage you to use the extension we built on top of it,
+or even better, build your owns and share them with us!