Mozilla F1 for Firefox allows you to share stuff inside the browser
Having used every browser available, and finally settling on Google Chrome, I have never desired to move back to Firefox — until now. Being able to share stuff through Twitter, Facebook and Gmail (the main services I use) just by clicking a few buttons is really compelling. With F1, it seems that simplicity is key and I have a feeling I am going to use Firefox way more often. You can grab the addon here!