iDo8p

NOTE : This plugin is translation ready
This plugin will automatically create links from words.
If you add word on master blog, all network wil lhave the replacement else it’s just for one blog.
Based on the exelent plugin automatic seo links from Emilio (http://emilio.aesinformatica.com)
As Emilio said :
Forget to put manually your links, just choose a word and a URL and this plugin will replace all matches in the posts of your blog.
For each link, you can set:
<ul>
<li>Title</li>
<li>Target</li>
<li>Rel</li>
<li>CSS</li>
</ul>

WPMU Automatic Links

This plugin will automatically create links from words.

whyte624

The plugin adds favicons of websites to links which they lead to. 
If a link has image inside (img tag), then favicon will not be added.
To suppress favicon for your link add ‘data-no-favicon’ attribute to the a tag: 
<a href="http://example.com" rel="nofollow ugc">my link</a>.
Uses Google S2 Favicon service.
Report issues or/and contribute here: https://github.com/whyte624/wordpress-favicon-links.

Favicon Links

Adds favicons to links in posts to give them nice look.

WPMU Automatic Links vs Favicon Links