Plaxo is an online social network aimed at businesses, like most social portals it allows you to easily connect with people in your offline world. It has a resemblance to LinkedIn and operates in a similar way. Once you have signed up you can set up a profile which includes employment history, experience and skills, education and any other relevant information. You can import your address books and then request to connect to the list of contacts. Again like many other social networks Plaxo will show you automatically what your connections are saying online.