The add-on looks to enhance the way you interact with content from your favorite website services.  Check out this quick video tour to learn more:

For people with plenty of screen real estate, this really is a great tool to add to the browser.  Your searches, social link sharing and much more are just pulled up in a popup window that comes from the right of the screen.  You might think this would get in the way of things – but it also does a good job at hiding itself when you don’t need it front and center.

KwiClick can display the results of your searches from the Firefox search box, which makes finding the right site easier than ever. This is an option that can be turned on/off whenever you like.

Want to give it a shot? Go download KwiClick for Firefox over at the Firefox add-ons website.

Some websites, like Hulu for example, give you the ability to dim everything in the background on a page so that you can focus on the video you are watching.  What if you could do that on every website? That is what the add-on for Firefox, Turn Off the Lights, brings to the browser.

This brings distraction free video watching to Firefox, plain and simple.  Here are a few more features of Turn Off the Lights:

• Turn the lights back on, by clicking on it
• Fade in and out effect just like the Chrome, Safari and Opera extension
• Support multiple video sites: YouTube, HTML5 video
• Support multiple image sites: Google Images Search

More features are planned for the future too.  They are looking to add autoplay, color changing, context menu options and more. You can learn more about the Turn Off the Lights project from their Google Code project website and pick up the add-on for Firefox from the Firefox Add-ons website.

Do you remember when picture in picture TV watching was going to be the next best thing?  You could watch one show, while another one was going on in the corner of your screen.  Well, picture in picture browsing is here and is on Firefox thanks to CoolPreviews.  This add-on from the developers of CoolIris is a great browser add-on that will let you preview links and media without leaving the page you are on.

Some of the features included are:

• Preview web links, images, and videos without leaving your current page or tab.
• Automatically subsearch Google, Wikipedia, and others
• Temporarily bookmark items to the right column with our unique “stacks” feature
• Instantly send links to friends and family with just a click.

If you spend a lot of time surfing around to random sources, the CoolPreviews add-on for Firefox could save you a lot of time.  You don’t even need to click the link to preview the content inside – just use CoolPreviews.

By far this has to be one of the most useful add-ons to come to Firefox in a long time, and it is amazing it wasn’t developed by Mozilla themselves.  To try it out for yourself, go download it over at coolpreviews.com.

How can you add the full screen button to YouTube videos found on Facebook?  This is the question that was brought to my attention Friday by one of my Facebook followers, and after doing a little hunting I did find a solution.

You see, for some unknown reason, either Facebook or YouTube does not want you to watch videos in full screen when on Facebook. Why?  I guess they are afraid it will take you, “out of the Facebook environment, leaving you with a less desirable experience” or at least that is what I would guess the Facebook public relations team would have to say.

So, how do you bring the full screen icon back to YouTube videos featured on Facebook?  Just grab the Greasemonkey add-on for Firefox, then get the user script named Fullscreen Youtube & Vimeo (+others) on Facebook.  Once this script is installed, you will see the full screen icon come back to your online videos you find on Facebook.

The control to watch things full screen (or not) is back to being your choice, and not the choice of the Facebook public relations team.  Thanks to Filipe for the great question!

How Does It Work?

This extension adds the functionality to download, convert or embed videos posted on Facebook.  When you click the download video link, the video will open as a .mp4 file.  You can then select, “Save Page As” from the File option in your menu bar to choose where to save the file on your PC.

The convert video link will take the video to the Zamzar free file conversion web site, where you can convert the file to .flv, .wmv, .avi, or the audio formats .mp3, .flac, or .wav. 

Start Downloading Facebook Videos! – You can pick up the Facebook Video add-on from the Firefox Add-ons web site.  So there you have it, now you can grab those Facebook videos you have been wanting to save to watch later.  (Kudos goes to ZeroPaid.com for finding this tip!)

The Full Screen Video add-on for Firefox does that.  Once installed, it adds a “Full Screen” menu option, when you right-click on any HTML5 powered video.  As of right now the only two known issues with this awesome extension are:

• When switching to full screen, the video will load and play from the start.
• Full screen is really only implemented on Windows at this point. On other operating systems, it’s merely a maximized window.

Other than that Full Screen Video gives you a simple addition to an already awesome feature of Firefox.  You can pickup this add-on via the Firefox Add-ons web site or check out the official web site for more information on the project.

How do you participate?  Here are the details from Mozilla:

It’s easy to participate in Fastest Firefox. Pick your talent (knitting, flipping burgers, brushing your teeth, whatever!) and make a video doing your thing—FAST! Follow the steps below and update before 6-21-09.

1. Make a 30-second video (home-movie style is perfect) of your fastest talent.
2. Click the button below to upload your video.
3. We’ll compile as many of your clips as possible into a single community video, so check after the Firefox 3.5 launch to see if yours made it!

Firefox 3.5 is two times faster than 3.0. And ten times faster than 2.0, or so they report via this new web site where you can learn about this speed run challenge. 

The extension, NetVideoHunter, promises you a world of easy to download videos and music from any YouTube-like video sharing web site.  With it, you can download media from places such as YouTube, MySpace, Google Video, Metacafe, Dailymotion and more.

One more nice feature that comes with this add-on is that before you download any video or music, you can play it in a built-in media player.  It has both fullscreen and video smoothing capabilities too, to make your viewing experience just that much better.

Here is a video tutorial on how to get the most out of NetVideoHunter:

Now, truth be told – there are a lot of extensions out there that promise to make content downloading easy and painless, however many fail in a number of ways.  NetVideoHunter however, has yet to disappoint.  If you have your own favorite media downloader for Firefox, feel free to share!

While this extension has many good features, my favorite might be the FlashGot All.  By selecting this from the menu (or by hitting Ctrl+F3) you can grab all the links found on a current page and dispatch them to the default download manager.  Another nice feature included is the FlashGot Media option.  Watching a video on YouTube?  Quickly download it by hitting Ctrl+F7, via the right click menu or from under the “Tools” Category in your menu bar.

FlashGot might simply be the best integration/add-on for your download manager.

Once installed, all you have to do is hit the YouTube icon next to the search result link.  Instantly the video starts playing, without the need to open up a new tab or window.  Also, you can also download the video and view more information regarding the video (date added, views, rating, comments) directly from the search results.

The player can be configured to suit your needs too.  You can select player colors, player size and these additional options:

• Allow auto play
• Show player border
• Show tiny icon on the status bar
• Show download button
• Show more information button
• Choose where to show the video (next to link, under link, ect)

It is a simple extension that does a simple task very well. You can pick up GoogleTube on the Firefox Add-ons web site.