This is not my first time of seeing this feature of having a visual preview of a link once the mouse pointer is hovered over it. I've seen it implemented in a lot of websites. But after seeing it at work in a BlogEngine.NET-powered blog that I visited recently, I can't help but be curious. How can I have it in my own blog?

Luckily for me 'though, the installation of this tool is easy. It is somewhat similar to the way I installed the AddThis button a few month ago.
Here's the step-by-step procedure of installing Snap Shots to your BlogEngine.NET-powered blog:
Step 1. Visit http://www.snap.com/snapshots.php#overview then click the 'Get Started' button.
Step 2. Follow the instructions provided.
Step3. Once you reach the installation portion, copy the code.
Step 4. Open the PostView.ascx file of your current theme using your favorite web development application (Microsoft Visual Web Developer Express for my case).

Step 5. Paste the code previously copied before <div class="footer">.

Step 6. Save the changes then open your blog in your local computer.
Step 7. If you like it and if everything is working correctly, upload the PostView.ascx file to the remote server.
Here's a description of Snap Shots taken from the Snap.com website. It also includes an instruction on how to disable this tool, should you wish to do so.
Snap Shots is a nice little tool that enhances links with visual previews of the destination site, interactive excerpts of Wikipedia articles, MySpace profiles, IMDb profiles and Amazon products, display inline videos, , MP3s, photos, stock charts and more.
Sometimes Snap Shots bring you the information you need, without your having to leave the site, while other times it lets you "look ahead," before deciding if you want to follow a link or not.
Should you decide this is not for you, just click the Options icon in the upper right corner of the Snap Shot and opt-out.