connecting to your interviewer on LinkedIn

A reader writes:

Is it recommended to add as a contact to your LinkedIn account someone you had recently interviewed with, if they are already in your extended network? Of course, this is dependent on the assumed rapport (although that can be hard to tell as well).

I have mixed feelings about this. I think different hiring managers feel differently: Some only want to connect on LinkedIn with people they actually know, while others are perfectly happy to connect, even if their only knowledge of you is a job interview. I don't think it's inappropriate to request the connection though; just don't be offended if they choose not to accept it. Different people use it in different ways.

However. That's for LinkedIn, which is all about professional networking. When it comes to more socially oriented sites, like Facebook and so forth, do not attempt to add your interviewer as a contact. I've had candidates do this to me, and it feels like presumption and over-reaching. Facebook is social; attempting to connect there is like inviting your interviewer to a dinner party. It's not appropriate.