Who doesn’t like customization? If you’re using Chrome or Firefox, there are some great add-ons that you can download to tweak your browser; anything from security and ease of use to simply making the tabs prettier.
 
Here are some of our favorites. If you have some to add to the list, let us know!
 
Firefox:
 
AdBlock Plus
 
Yup, it’s exactly what it says it is. Block ads on nearly any website you come across, with the option to toggle blocking based on the type of ad (say, animated flash ads or those annoying ads with sound).
 
Be warned that this may disable some sites – for instance, Hulu will display a notice saying that ad revenue pays for the video you’d like to watch until you disable the add-on.
 
Social Fixer
 
Wish you could block all those FarmVille posts on Facebook? This app can do that, along with hiding posts you’ve already seen, showing whole pictures by hovering over the thumbnail, and tweaking the font size for those with sight problems.
 
Be Quiet!
 
Automatically pause any music or other videos in your browser when you begin playing something else. Also adds the option to tie the play/pause button to a keyboard shortcut.
 
Chrome:
 
Google Dictionary
 
Double-click any word to view its definition in a small pop-up bubble. You can also set it to “translate” mode if you’re trying to learn a new language.
 
Search By Image
 
Right-click a photo online to “search Google with this image.” You’ll be able to see similar images and other places on the web where that image appears. Helpful if you’re trying to locate where an image originated from.
 
Google Mail Checker
 
A red icon will display in the corner of your browser with the number of unread Gmail messages you have. Clicking the icon will take you directly to your inbox.

 
After using these add-ons for a few days, you'll wonder how you ever got by without them... especially when you have to switch to another computer!