I guess at some point these essays would simply be filtered out through author identification systems. If not already. Even if the accuracy of author identifica

I guess at some point these essays would simply be filtered out through author identification systems. If not already. Even if the accuracy of author identification is relatively low (80-85%?), just the thought that there is such a system in place should discourage students from cheating. As to proof-reading and consultants, more power to them. Everyone should bounce their work at professionals in the area, before publishing it. It is a very good practice.