I was reading the FAQ but it does not say if I can ask or no about what modules can be useful to implement a feature or behaviour.
I love this site because I spent days doing research about how to implement some behaviour in Drupal. Then, I asked what modules I should use or in what way I could accomplished that. I have two valuable answers that gave me the right track.
However, now that I am more familiar with drupal.stackexchange and I more concern to follow the rules. I wonder if my question was valid in first place.