Makoto

This plugin allows you and your visitors to add comment as textual annotations to images by select a region of the image and then attach a textual description, the concept of annotating images with user comments. 
The text is intergrated with WordPress comment system. 
Integration with <a href="http://www.flipbit.co.uk/jquery-image-annotation.html" rel="nofollow ugc">JQuery Image Annotation from Chris</a> with <a href="http://github.com/stas/jquery-image-annotate-php-fork" rel="nofollow ugc">PHP support from GitHub</a>. 
Modified from <a href="http://www.superwhite.cc/demon/image-annotation-plugin" rel="nofollow ugc">Demon Image Annotation version 1.0</a>. 
Icons from <a href="http://www.famfamfam.com/lab/icons/silk/" rel="nofollow ugc">Fam Fam Fam</a>
Features:
<ol>
<li>Ability to add notes to your uploaded pictures.</li>
<li>Show notes on single page, front page, archive page and etc.</li>
<li>Notes synced with WordPress commenting system but there’s option to turn it off.</li>
<li>Gravatar in the notes.</li>
<li>Commentator’s name in the notes.</li>
<li>Image thumbnail appear at comment area, but there’s option to turn it off.</li>
<li>No hard coding required.</li>
<li>Admin page.</li>
<li>Remove all database if you wish to not using the plugin anymore.</li>
</ol>

Guan Image Notes

Image tagging system sync with WordPress comment system. Or also known as image notes, or image annotation.

cartpauj

This plugin adds a text editor area to each User Profile in the dashboard for Administrators to keep private notes about each User. The notes are ONLY visible to Administrators — that’s the whole point! It also adds a column to the “All Users” list where you can quickly see the note for the user without having to even open their profile.
It is especially handy for <a href="http://www.memberpress.com/?aff=20" title="Best membership plugin for WordPress" rel="nofollow ugc">Membership Sites</a> where you may have thousands of members to deal with and need to remember special circumstances for them.

User Notes

When you're running a Membership Software on top of WordPress and have a team of admins managing thousands of users you can lose track of what's going on with some users pretty fast. This plugin makes it dead simple to keep an internal file on people so you can see previous admin notes about them. Very important to a well functioning business.



Straight forward and super effective

Keep private notes about each of your users that only Administrators can see.

Guan Image Notes vs User Notes