When local police arrived, I had to explain Skype to them. This is when I realis...

rz2k · on Sept 19, 2016

It could be that their security experts were in their early twenties and had never heard of skype.

thaumasiotes · on Sept 19, 2016

My 13-year-old brother and sister are on skype constantly. If the computer's open, skype is running in the background.

Skype is also well-known among current chinese college students.

Basically, I think it's unlikely that anyone in their early twenties has never heard of skype.