Personalize, if not humanize, your posts, adding (CSS) popups containings avatars next to mailto links, as well as next to any word. You can chose avatar images, or let Gravatar chose it for you.
For documentation and tips, please refer to the official plugin page for <a href="http://planetozh.com/blog/my-projects/wordpress-plugin-avatar-gravatar-popup/" title="Avatar Popup" rel="nofollow ugc">Avatar Popup</a>

Ozh' Avatar Popup

Add CSS popups next to mailto links or next to any word. Can be any custom image, and has gravatar support.

Creates a Rewrite Rule that will allow users to log in from the custom URL <code>yoursite.com/login</code> instead of <code>/wp-login.php</code>.
This plugin is an example of one of the many possibilities of WordPress’ Rewrite API. See the whole <a href="http://planetozh.com/blog/2011/01/pretty-login-url-a-simple-rewrite-api-plugin-example/" rel="nofollow ugc">Rewrite API tutorial</a> on Ozh’ blog.

Ozh' Simpler Login URL

Creates a Rewrite Rule that will allow users to log in from the custom URL yoursite.com/login instead of /wp-login.php.

Ozh' Avatar Popup vs Ozh' Simpler Login URL