[Please also look at my page Are you a good programmer?]
Everybody likes to be seen as a competent, knowledgeable person. But expertise is relative. You might think you know something perfectly fine. But in the eyes of another person you might look like a beginner.
I like to call a spade a spade. I like to use the whole spectrum of judgments from beginner to expert, from reasonable usage to dazzling exaggerations which lead people up the garden path. Obviously this is based on my own, subjective view, on my education and my knowledge and on my valuation system. Here we go...