How do you keep in touch with people?
Email, Facebook, LinkedIn, College Alumni Network—how do you keep in touch with everyone that you want to keep in touch with? (Especially when they they are all over the world?)
Do you use software/tools to remind you when to “ping” someone? How do you do it? By keeping in touch, I mean something more than writing on a FaceBook wall or updating your status— I am talking about something more substantial such as an email, phonecall, note/card via mail, etc.
This question is in the General Section. Responses must be helpful and on-topic.