... deputy assistant attorney general Richard Downing said in the press conference. "The Department of Justice will not stand for exploitation of our nation’s children. Let today’s announcement send a message: If you were involved in these crimes we are coming for you."
Also the users of the site, at least 23 in the US, could possibly be considered as co-defendants in the alleged exploitation of children.
In addition to the site takedown and Son's indictment, officials around the world also arrested a total of 337 Welcome to Video users in 23 US states, Washington DC, and in 11 other countries.
However, I am not a legal expert. These are merely my uninformed opinions.