WordPress Steem allows you to publish your WordPress articles/posts on Steem blockchain.
FEATURES:
1. Automatically converts your post content according to Markdown format.
2. Automatically render WordPress shortcodes with Steem post (Assuming you would utilizing the default WordPress editorial manager NOT the Markdown editor).
3. Publish your recently made WordPress post of the Steem blockchain.
4. Publish your old WordPress post of the Steem blockchain.
5. Update your already published Steem post If your are using this plugin it should publish that Steem post.
6. Set post reward alternatives, for example, power up (100%), Default (50% / 50%), Furthermore decrease Payout.
7. Set custom post permalink for your Steem pos.
8. Set post tags to your Steem post.
9. Very Easy to use User Interface.
LIMITATIONS:
1. No help yet for scheduled Posts/Articles yet but, it will be supported on upcoming releases.
2. Transformation of post content to Markdown might be off sometimes.
NOTE
You will require your Steem PRIVATE POSTING KEY to use this plugin to work. Your PRIVATE POSTING KEY is NOT stored on our servers.
The plugin will automatically get a 15% curation reward from the Steem post created with this plugin for the use of development and maintenance cost with the beneficiary going to 
ScreenShot:
All the pictures and content has been taken from this following link:
https://wordpress.org/plugins/wp-steem/