DEPRECATION NOTICE: Twitoaster and its API will be shut down this Sunday (March 20th). That means this WordPress Plugin will cease to function (like any other service relying on Twitoaster API). <a href="http://blog.twitoaster.com/twitoaster-shutting-down" title="Twitoaster shutting down" rel="nofollow ugc">Read the full Announcement here</a>
Twitter Comments system. Give to you readers the possibility to send comments via Twitter! Automatically retrieve Twitter Replies and/or Twitter Retweets to your Blog’s Posts. These Twitter mentions are handled like Posts Comments, using WP built-in comment system.
Here is how Twitter Comments work:
<ol>
<li>You Post an article on your blog</li>
<li>You update your Twitter status (or let the plugin do it for you)</li>
<li>You automatically get all related Twitter Replies and/or Twitter Retweets as comments to your Post</li>
</ol>
The plugin also brings two widgets:
<ol>
<li>Analytics charts showing how many Twitter Replies and Twitter Retweets you are receiving</li>
<li>Listings of your 20 most recent Twitter Conversations</li>
</ol>

Twitter Comments – Twitoaster

Twitter Comments system. Automatically retrieve Twitter Replies and/or Twitter Retweets to your Blog's Posts using WP built-in comment system.

Denis Yanchevskiy

DCO Comment Attachment allows your visitors to attach images, videos, audios, documents and other files with their comments. They will also be able to automatically embed links from Youtube, Facebook, Twitter and other services in the comment text.
With plugin settings you can:
<ul>
<li>Limit the maximum file upload size.</li>
<li>Make an attachment required.</li>
<li>Specify whether the attachment will be embedded or displayed as a link.</li>
<li>Enable/Disable autoembed links (like Youtube, Facebook, Twitter, etc.) in the comment text.</li>
<li>Select an attachment image size from thumbnails available in your WordPress install.</li>
<li>Link a thumbnail to a full-size image with lightbox plugins support (see <a href="#faq" rel="nofollow ugc">FAQ</a> for details).</li>
<li>Open a full-size image in a new tab or link thumbnail to the attachment page.</li>
<li>Enable/Disable multiple upload.</li>
<li>Combine images to gallery.</li>
<li>Select an attachment image size for the images gallery.</li>
<li>Restrict attachment file types.</li>
<li>Decide who will be able to upload attachments: all users or only logged users.</li>
<li>Manually moderate comments with attachments.</li>
</ul>
You can also:
<ul>
<li>Add, replace or delete an attachment from a comment on the Edit Comment screen.</li>
<li>Attach an unlimited number of attachments to the comment in the admin panel.</li>
<li>Delete an attachment from a specific comment or bulk delete attachments from comments on the Comments screen.</li>
<li>Display attachments attached to comments to the current post (or a specific post) with the <code>[dco_ca]</code> shortcode. You can also filter by type. See <a href="#faq" rel="nofollow ugc">FAQ</a> for details.</li>
</ul>
Attachments are uploaded to the WordPress Media Library and deleted along with the comment (if this is set in the settings).
REST API is supported.
DCO Comment Attachment is also available on <a href="https://github.com/yadenis/DCO-Comment-Attachment" rel="nofollow ugc">GitHub</a>.

DCO Comment Attachment

Allows your visitors to attach files with their comments

Twitter Comments – Twitoaster vs DCO Comment Attachment