A selfie. Here's my thinking on the "Psychology of Selfies"
Posting Selfies anywhere is a way of communicating and looking for a response. We count the number of "likes" and there is a lovely expectation of further "likes". We love to have acknowledgements and add some meanings to them such as: they like me, they still want to be friends with me, forgiveness, a way of connecting, saying hello, non face to face contact, etc.