Slingpage makes bookmarking interactive. It’s a new start up recently out of private beta that’s applied the sticky note on the web concept to social media and content sharing. It’s been tried before, but without much success. Slingpage lets you immediately send a page or site you’re visiting to friends and family with a single click. You can even start a chat about the page. Build content you like and start a ‘SlingCast’, or a little broadcast of stuff you like and share with friends. Slingpage currently only works as an Internet Explorer extension but a Firefox version is in the works. You can import contacts from Outlook, Yahoo, Facebook, and Gmail.