ThaNerd

I’ve written an extremely basic plugin that handles what’s described in title : Internet Explorer 9′s new Pinning feature.
With this plugin installed and enabled, if any of your blog’s authors (or yourself) pin it to their Windows 7 Taskbar, they’ll have three new links:
<ul>
<li>Write a post</li>
<li>Moderate comments</li>
<li>Upload new media</li>
</ul>
It will also display the 5 most recent posts titles for everyone.
Finally, it lets you set what color should be the back and forward buttons in IE9 after someone pins it.
<h4>Features</h4>
<ul>
<li>Localized to french</li>
</ul>

IE9-Pinning

Adds meta tags handled by Internet Explorer 9's pinning feature

Pedro Lamas

You can check for more information <a href="http://www.pedrolamas.com/projectos/wordpress-internet-explorer-site-pinning-plugin/" rel="nofollow ugc">here</a>.

IE9-Pinning vs Internet Explorer Site Pinning