I totally agree with Alrami. Just want to add my one cent on that issue. (would have given 2 cents but need to save for baby diapers ;))
I think we are all matured adults and responsible professionals and we should act that way by respecting others’ decisions of sharing or not sharing files, replying or not replying to emails, and so on. We all have our personal reasons for doing things. Of course, it would be nice to help each other, but everyone is busy and has his/her own life (family, work, etc.) and other matters to take care of. Some check their emails every day, others once a week or every once and awhile. Therefore we should not expect people to reply ASAP to our messages and fulfill our requests.
Moreover, let’s not assume why someone won’t reply, take it personal or make jokes. I cannot remember who, but there was someone on this forum whose dad passed away and he was quiet for a long time by not replying to messages. (by the way, if you are reading this, please accept my sincere condolences).
So anyway, as Alrami said, let’s all be friends. Let’s help each other and learn from one another, but also respect others’ decisions and reasons for not doing so.
However, I do not agree, a user find that has the right to leave cursing, speak words of hatred, and defaming people (as did a User here said to be professional), just because they ask for help or seek information.