Use the Evernote Web Clipper to save things you see on the web into your Evernote account.
StumbleUpon is the easiest way to discover new and interesting photos, videos, web pages and more, recommended by a community of experts. Tell us what you are interested in and we recommend page after page of amazing stuff you’d never expect to see.
Shareaholic is the easiest way to share interesting links using Facebook, Twitter, Google Mail, Reader, Bookmarks, Evernote, Bitly, StumbleUpon, and more... from one simple ALL-IN-ONE add-on. This is the ultimate tool for the link sharing addict!
Lets you post photos, videos, mp3s, quotes and links to your Tumblr tumblelogs by dragging and dropping content onto the extension's statusbar icon or by the "Post to my tumblelog" menu items in the content's context menu.
The Digg Toolbar for Firefox lets you Digg, submit content, and keep track of Digg even when you're not on the Digg site itself. With a notification window built into the toolbar, you'll never miss a popular story or when friends Digg, submit, or com...
With the bit.ly Preview Plugin for Firefox, whenever you hover over a bit.ly URL on any web page, we display a tooltip showing the Page Title, Long URL, and any Click Data we have about the page the URL links to. If you hover over another short URL,h...