USA.gov has a discussion and template for creating a social media will. The site recommends that if you are active online, you should consider creating a statement of how you would like your online identity to be handled after your demise. It recommends appointing someone you trust as an online executor. This person will be responsible for the closure of your email addresses, social media profiles, and blogs after you are deceased. The site includes a social media will template in Microsoft Excel format.

You can read more about the social media will on the USA.gov website here.