Most of the information and text is from MSDN. The purpose here is to summarize the pinned sites.
Overview
Users of Windows Internet Explorer 9 and Internet Explorer 10 can pin any website to the Windows 7 taskbar or Windows 8 Start screen just as they pin applications. When a website is pinned, it can be opened quickly and conveniently. A Pinned site is more than just a shortcut, however. With very little effort, developers can access features of the Windows 7 taskbar or Windows 8 Start screen from their websites—features that can greatly improve a user’s ability to navigate, control, and interact with the sites they visit.
Benefits of Pinned sites
Websites that implement the Pinned site API can feel more like a native Windows application. Site developers can build a more compelling website that have higher engagement by:
- Declaring a static list of tasks for fast navigation to common destinations within a site.
- Creating a dynamic list of destinations that are personalized and relevant to the user.
- Drawing the user back to the website by flashing the taskbar button or displaying a icon overlay.
- Adding remote controls and commands to the taskbar’s preview window.
- Making the browser look and feel like your site by changing the color of the Back and Forward buttons.
- Promoting a high-resolution site icon that extends your site’s brand outside the browser.
The following graphic shows the taskbar elements in Windows 7.
How to Build a Pinned Site
Its a matter of meta tags in the head element of the HTML page, here’s a MSDN Blog that shows all of the meta tags for pinned sites. For a dynamic jump lists (elements in the list), you can add them using a small JavaScript that injects the meta tags to the header after the page loads; example. RSS feeds.
Generate Meta Tags
There are two meta tags generators:
- First to generate for Windows 7 taskbar
- Second for Windows 8 live tiles
Ghaleb’s blog supports pinned sites, that redirects you to the social media, and has a jump list for the recent blog posts 
.
Ghaleb’s Blog pinned list on taskbar.
References
Here is the list of the references for pinned sites:
