Alexandre, When a lead interacts with the social apps, we capture the linkedin profile info and store it in the lead DB. You could also use a 3rd party lead db enrichment service like fullcontact to add the linkedin (and other social) profile info to the lead's record. Do you have any other usecases in mind?
@Raj We get a lot of leads from linkedin, but the CSV download + reformatting/cleaning + manual upload is a pain. Are you talking about http://www.fullcontact.com/
@Kelly thanks. Is Sales Navigator a CRM like salesforce?