"professional copyright infringement" Excuse me, but 'professional' could mean anything. Some people use it to mean that they're following standard industry pr

"professional copyright infringement" Excuse me, but 'professional' could mean anything. Some people use it to mean that they're following standard industry practices; others use it because they're always dressed in suits. Another definition separates 'professionals' from 'amateurs' in a way that 'professionals' earn their money with their trade, and amateurs are just messing about; there is much jealousie-de-metier here. This vagueness of the term 'professional' causes me to immediately ask what it really entails if somebody pitches to me that their services are 'professional'.