Yours, Etc.: Origins and Uses of 8 Sign-Offs
Time spent face-to-face or in close proximity, esp with persons useful to one's career: Getting 'face time,' as insinuating your way into a photograph with the President is known/ He recently spent some ''face time'' chatting with his new pig (1990s+)
Time spent interacting with somebody face-to-face (as opposed to via electronic links). "Oh, yeah, I spent some face time with him at the last Usenix."