Can I just say that although you clearly don't intend for your findings from this mini study to have any implications, I don't really think that the study is worthwhile at all. For a start, your sample is biased, vfp developers are not necasserily a representative sample of the population and because the function of this site is to gain and share information, people do not necasserily communicate in the same way that they would if they were having a conversation. Also, how are you measuringing Insult Mentality? Number of please? Number of angry remarks? The study is too subjective and open to observer bias.
If you are genuinly interested in this sort of thing, I think you'll find that carefully controlled studies have already been conducted using reasonable sized sample. There are a wide range of psychology and communication resources on the web, perhaps you should look at some of these.

Personally, I must say that I've found the tone of this forum very negative, the responses to your message are the perfect example!