This plugin let’s you place notes on images like you know it from flickr. Via a additional box in the admin’s post edit view you’re able to place notes on images associated to the post.
Please take note that it’s currently no final release, so there might be bugs.
If you have any problem please consult the <a href="http://support.knuspercode.de/index.php/categories/2/knspr-imgnote" rel="nofollow ugc">support forums</a>
Uses the <a href="http://odyniec.net/projects/imgareaselect/" rel="nofollow ugc">imgAreaSelect jQuery plugin</a> by Michal Wojciechowski and is based on the <a href="http://www.sanisoft.com/blog/2008/05/26/img-notes-jquery-plugin/" rel="nofollow ugc">imgnotes jQuery plugin</a> by Dr. Tarique Sani.
<h3>Workflow</h3>
<ol>
<li>Add a new post or edit an existing one</li>
<li>Upload the images via the WordPress media upload tools and insert it in the post</li>
<li>If the post is new, safe it as draft and reload the page, the images should be visible in the thumbnail list</li>
<li>If the post is an existing one just hit the “Reload” link in the thumbnail list and the new images should be visible</li>
<li>Click the thumbnail of the image you want to add notes to and click the “add note”-Button.</li>
<li>Add all your notes, they will be automatically saved as you click “Save note”.</li>
</ol>

knspr-imgnote

This plugin let's you place notes on images like you know it from flickr.

shawfactor

LH Dashboard Notes allow you to insert noes on your wp-admin dashboard for your users using the post editor interface. If this plugin is network activated the insertion and editing of these dashboard notes is centralised on the main site of your multisite install. Allowing you to set Dashboard notes that are viewed throughout your multisite network.

LH Dashboard Notes

Allows you to create and edit notes that appear on the admin dashboard

knspr-imgnote vs LH Dashboard Notes