FREELinkedIn Like lets you Like any company on LinkedIn.com. The Kynetx application can be installed as a browser extension available for Firefox, Chrome and Internet Explorer. This app blurs the lines between two social networks by seamlessly connecting them together. LinkedIn_Like won the Kynetx Facebook contest in Nov 2010.
FREELike All, Love All! The Facebook Like Button is everywhere, almost. With LikePlus you can share the content you like on Google, Twitter and LinkedIn. LikePlus integrates Facebook Like into your Google search results, Twitter stream and LinkedIn company profiles.