WordPress Extension for Chrome – Brings features from WordPress.com to your browser
Install this extension to instantly view your WordPress.com notifications, follow sites, and start new blog posts quickly and easily from your browser toolbar.
Install WordPress Extension for Chrome: http://chrome.google.com/webstore/detail/wordpresscom-extension/pnbbfhcegldppmibabepjfjloachnmjb?hl=en
See and install WordPress Extension for Firefox