[gog]

There is a library called Faker that can do this for you. It exists for perl, ruby, php and probably other languages.

I am interested in where do this pictures come from? Did these people give their permission to be used like this?

[C1D]

If you scroll to the bottom of the page you can see he got them from Greg Peverill-Conti's 1,000 faces project, which is licensed under Creative Commons BY-NC-SA 2.0,