TyCam

This plugin is extremely beneficial if you have more than one author on your blog but it?s also still good to have even if your blog only has one author. What it does is add in social media links to your Contact Info section in your user profile for popular social media sites such as Google Plus, Twitter and Facebook.
Once you fill in one or more of those fields, 16 x16 icons will appear next to your name when your name appears as the author of a blog post. This lets readers easily find your social media information as they read and is completely unique to each author.

Author Social Links

Adds 16x16 social media icon links next to the author's name, unique to each author.

Brandon Allen

This plugin allows full control of your user permalinks, allowing you to change both the author base (the ‘/author/’ portion of the author URLs), and the author slug (defaults to the username of the author). You can set the author base globally, or you can set it to be user-specific based on a user’s role. You now have the power to craft the perfect URL structure for you Author pages.
WordPress default structure http://example.com/author/username/.
Edit Author Slug allows for http://example.com/ninja/master-ninja/.
Using a role-based author base would allow for http://example.com/ida/master-splinter/ (for an Administrator Role), or http://example.com/koga/leonardo/ (for a Subscriber Role).
Development of this plugin takes place on <a href="https://github.com/thebrandonallen/edit-author-slug/" title="Edit Author Slug on Github" rel="nofollow ugc">GitHub</a>. Pull requests are always welcome!
Translations should be submitted to <a href="https://translate.wordpress.org/projects/wp-plugins/edit-author-slug" rel="nofollow ugc">Translate WordPress</a>.

Edit Author Slug

Allows an admin (or capable user) to edit the author slug of a user, and change the author base.

Author Social Links vs Edit Author Slug