I love how Rapportive "just works" out of the box.
Rapportive is telling me so much I didn't know.
I do not know how I ever survived Gmail without Rapportive.
Can't believe I waited this long to install.
From Twitter Buzz
Rapportive is a free browser plugin (available as both a Firefox add-on and as a Chrome extension), replacing the adverts in Gmail’s sidebar (which you would like probably to get rid of anyway) with useful information about your contacts: a photo, bio and links to social media accounts (Twitter, LinkedIn, Flickr, etc).
You can immediately see what people look like, where they're based, and what they do. You can establish rapport by mentioning shared interests. You can grow your network by connecting on LinkedIn, Twitter, Facebook and more. And you can record thoughts for later by leaving notes.
Installation is simple and takes no more than couple of minutes. You have to give it access to a minimum of information to get started (as your name and email address, via your Google account). The service pulls contact information from the Rapleaf database, so the amount of biographical information and links to social media accounts that are returned will depend on how well Rapleaf has managed to tie that contact’s email address to the various social media services.
Install plugin for free: http://rapportive.com/