Cortex is an app that works with Google Chrome that lets you link to a webpage you’re viewing to your Twitter, Facebook and Tumblr accounts or even your iPad.
You simply hold your mouse button down (or finger for touchscreens) to bring up a pie menu with your selected social media and/or iPad logo.
Click on the one you want to link to, press enter and the link and page headline shows up as a status at your social media account. You also have an option to write a comment to go with the URL, which is automatically shortened if sending to Twitter.
Until recently Cortex was available by invite but is now available for download here.