I really don't think social medias have anything to do with this and that if there is such a thing as the Biblical Apocalypse, the Mark of the beast will probably be a much literal thing than we imagine. At some point in our corpocracy ruled by money and business, we will be branded for control and that is when we will know the mark of the beast.
Or to feed another older theory, Noticed how everything tech wise is slowly being linked to your phone? You can pay your bills using your phone, you can make transactions using your phone, you can link it to your car, to your computer, to your E-mail account, to your Skype, to your Facebook and you can even link phones to industrial equipment now. A factory I worked in had a CNC laser cutter with a phone app to be able to do readings on the heat sensors. they did say that the mark would be accepted with open arms by all because it will be given to us by a false prophet. Well a smartphone is nothing more than a tracker chip. All your info is linked on it and it has an integrated GPS, camera and microphone that, as it has been proven, anyone could be listening on to. Smartphones are a trend now and you can't go anywhere anymore without seeing someone on his phone. Even I am always on it. The smartphone sounds like a more accurate possibility.