Welcome to my private corner of Internet...
More info can be found at :
Work-related contacts: LinkedIn >> [Policy: accepts connection-requests with those persons that I do have (or had) a personal relation to in my professional life.]
Private contacts: See Personal communication policy
Do not use Facebook >> [Policy: I accepts connection-requests with those persons that I do have (or had) a personal relation to in my private life, but do not expect me to log in more than once a year (or upon request).]