You can add a contact's Facebook, Twitter, LinkedIn, Instagram, Flickr, YouTube, Google+, Pinterest, MySpace, FourSquare, Skype or Custom social media addresses to their contact record, in order that you might quickly access information that is currently relevant to them.
To add any of these addresses, go to their contact record. Then, select Social Media from the Add menu in their Contact Card:
You'll then see the below modal:
You can then select the Social Media Type from the options in the first box, copy their social media address in the second box, and, if desired, give the Address a Custom Title that will display in their Contact Card after adding the address.
After entering your information and clicking Add Social Media, you'll have one-click access to that Social Media address for the contact. After completion for all of the available channels you want to enter, this particular Contact Card might look like the below:
Also, clicking the Actions icon for a social media address will give you the options to update it, view a history of changes to it or delete it from the record: