tekitou

This forbid visitor to download images. 
That’s all.
<ul>
<li><a href="http://wordpress.1000sei.com/image-protector/" rel="nofollow ugc">Support</a></li>
</ul>

Image Protector

strawman sockpuppet

Matteo Manna

This plugin simplifies the life of WordPress users. 
Now users can add or remove their avatar simply using images from his Media Library. Simple to use, no additional functions required. Plugin available on <a href="https://github.com/MatteoManna/Simple-User-Avatar" rel="nofollow ugc">GitHub</a>.

Simple User Avatar

Great

This is just what I needed! Did never like the tie to Gravatar. And the little donation reminder doesn't bother me at all. :)
Kudos!

Great Little Plugin - Clean Code

Simple User Avatar helps users to add or remove their avatar using images from his Media Library.

Image Protector vs Simple User Avatar