Jason Stallings

Instructions:
Signup for an API key at <a href="http://yoapi.justyo.co" rel="nofollow ugc">yoapi.justyo.co</a>, for “Callback URL” put in your homepage with a trailing slash.
Put your API key in the YoPress settings and hit save changes.
Then tell your visitors to Yo your website’s username, or use <a href="http://button.justyo.co" rel="nofollow ugc">button.justyo.co</a> to generate a button.
Now when you publish a new post your visitors will get a Yo with the link!

YoPress

Yo your subscribers when you publish a new post!

paulmolluzzo

This is an integration of the Yo service for WordPress. It will track Yo subscribers and allow you to send a Yo when you make a new Post. After it’s installed, go to the ‘Yo’ tab under Plugins. There you can enter your API Key to send Yos, and see a list of Yo subscribers, how many times they’ve sent you a Yo, and the last time they sent you a Yo.
<h4>How to Use</h4>
<ol>
<li>Grab a <a href="http://api.justyo.co" rel="nofollow ugc">Yo API Key</a> and make the callback URL your WordPress home page URL.</li>
<li>Go to the Yo Worpress page in the Plugins menu.</li>
<li>Enter your Yo API Key and click “Save Yo API Key”.</li>
</ol>
Now when you write some posts you’ll send a Yo to all your subscribers. As you gain subscribers, they’ll get listed in the table on the Yo WordPress admin page.

This plugin will track your Yo Subscribers and allow you to send a Yo to all your subscribers when you publish a new Post.

YoPress vs Yo