I am not your boss, Sir and certainly not Dear. I sign my posts Taraz so that or the @tarazkp tag is fine. Perhaps this is cultural and an acceptable way to greet people in some places but, it is not a great one for an international community.

Hah. I get those, too. Perhaps I should start gently discouraging that, too. It can be a polite way to address people in some corners of the world but it tends to make me uncomfortable to be called sir. What sir am I except when being a patron in a restaurant in Pakistan perhaps? :) The only people in real life who address me as dear or any equivalent thereof are my wife and my daughter ("Dear Daddy ..." especially if she wants something) and I like it that way. I certainly do not appreciate being called dear by some neckbeard online or IRL.