Point taken, although a minor counterpoint is that I do all that I can to share my knowledge whenever people ask. Last Sunday, I had advised a complete stranger on how to get cheaper cell phone service. We had started talking after I asked if it was alright if I joined his table at a crowded food court. Upon finding out that I am a software engineer, he started telling me about his problems and I did what I could to help him. It was a nice use of part of my Sunday. :)