ERA404

This plugin operates by scraping an Author Post Activity page (e.g.: https://www.linkedin.com/today/author/[author]) to collect information about the author(s)’ LinkedIn articles. 
The properties of these articles are then sanitized and saved to a new table in WordPress, preparing them for output into your widget. 
The widget can be positioned in sidebars or footers like any other feed.
Boost the Traffic to your LinkedIn Articles
<ul>
<li>Industry Leaders using LinkedIn for their social or news broadcasts can direct their blog traffic back to LinkedIn. </li>
<li>Plugin can import LinkedIn articles from any number of authors.</li>
<li>Separate widgets can be placed into the templates to show articles by one author, or all author articles sorted by newest.</li>
<li>Additional widget controls built in for number of articles, module title and excerpt length.</li>
<li>Imported articles can be individually toggled for visibility.</li>
</ul>

LinkedInclude

Import your LinkedIn articles into a WordPress widget.

oneline

A Simple plugin which adds a widget to your wordpress admin widget area which you can then assign to the side bar etc… features are as follows:
Allows you to set your user / social ID’s 
Allows you to switch from icons or text links 
Allows you to turn social button / links on or off
Supported Social Sites:
Facebook 
Twitter 
Linkedin 
RSS

Easy Social Share

A Simple plugin which adds a widget to your wordpress admin widget area which you can then assign to the side bar etc...

LinkedInclude vs Easy Social Share