Justin Kopepasah

Out of the box, Jetpack’s Markdown Module does not add support for custom post types. This plugin fixes that by adding support for this module to public custom post types that support the editor.

Jetpack Markdown Support

Add's Markdown Module Support for custom post types.

Brandon Kraft

Jetpack automatically disables its Open Graph tags when there’s a known plugin that already adds Open Graph tags, which is good. Sometimes, though, you might want to use Jetpack’s version instead. Even if you disable the tags in the conflicting plugin, Jetpack won’t add Open Graph tags without being told to do so.
This is great for when you want to use the awesome WP SEO by Yoast plugin or others like All-in-One SEO, but, for whatever reason, would like to use Jetpack’s OG tags instead.

Always Use Open Graph with Jetpack

Jetpack automatically disables its Open Graph tags when there's a known plugin that already adds Open Graph tags, which is good.

Jetpack Markdown Support vs Always Use Open Graph with Jetpack