The authors are all students of New Technologies of Communication at University of Aveiro, Portugal. Their names and email adresses are:
Diana Antunes - a31263@alunos.ca.ua.pt
Flávia Neves - flaviazster@gmail.com
João Filipe - a31464@alunos.ca.ua.pt
Luis Confraria - a23840@alunos.ca.ua.pt
Nuno Caldeira - trimaria@gmail.com