&#62; <i>based on that I am assuming that the US system is a bit more lenient about what is classed as indecent</i><p>It's basically up to however draconian a judge, jury or prosecutor wants it to be. If a girl baking cookies in a short skirt is 'indecent' to someone in that list, then you might just get successfully prosecuted for it. It's really insane.<p>[EDIT] The system was <i>supposedly</i> designed with its original intent being to protect victims (child abusers, and to a lesser extent child porn consumers in a bid to choke off demand for child porn). Now it's basically become a vehicle whose aim is to punish you if your get off on something that they don't like, or do something that they don't like (where 'they' is someone in that list above). If a judge has a stick up his ass about teens being 'immoral' then he may just throw the book at teens that are brought to his court for 'sexting' just to satisfy his urge to punish someone for it.