Oh no, I rarely get upset when people know more than myself. I have a huge respect for knowledge and even disregard sarcasm or whatever by a more knowledgeable person.

It's very similar to what Skeezyks said about the colours. I think it's a good advice to either confirm, or like gayleggg said - not to assume right away that people meant harm.

Sometimes I think I wouldn't say anything, won't post anything, won't comment so not to provoke criticism, but then I'm just running away from the problem. So communicating more on facebook is a good exercise for me - I learn more about myself and others and also learn to cope with my emotions. Since I started doing it several months ago I think I've improved my communication skills. But I get easily infuriated by some comments. Now reading your answers and reflecting on it - it may be anger issues.