If you’re using Gmail and don’t have Rapportive installed, then you’re missing out. It replaces the Gmail advertisement to the right of the email with useful information:
- Profile picture
- Brief bio
- Lists all the networks that they use (from Facebook to Foursquare to Yelp, etc.)
- Allows you to easily add them to your network
- Add a private note about the person for future reference
P.S. It works with Google Apps.