What is #MuseumSelfie Day?

[EDIT TO UPDATE FOR 2015] This post has been getting more hits so just to clarify: #MuseumSelfie day is on January 21, 2015 Twitter: @MuseumsSelfie Day Instagram: MuseumSelfieDay Hashtag #MuseumSelfie See CultureThemes write up: It’s back! #MuseumSelfie Day on January 21st @MuseumSelfieDay official account  Objective:  A day to share selfies …