Rikard, Your quote is good: " Sharing knowledge is the most fundamental act of friendship. Because it is a way you can give something without loosing something." -R. Stallman but I disagree. I think it shoud be: "Sharing knowledge is the most fundamental act of friendship. Because it is a way you can give something, yet gain an invaluable amount." I have been an academic and I found that "If you want to learn something: teach it." Because it requires that you organise your thoughts more than you had before and have every little detail at your fingertips. And the exchange usually triggers a response which is frequently beneficial to the teacher (unless he is too arrogant to listen). So, every person who on this list who helps another is 'forced' to put at least a little effort into thinking through his knowledge and putting thoughts to pen and paper. And he usually gets a response which either forces the teacher to re-think his first ideas (thereby improving them) or he receives grateful acknowledgement and recognition. But be warned: pontification leads to being shunned. Kind regards, Colin