I liked this one (a sign you are *not* being boring):
3. Interruption. Although it sounds rude, interruption is actually a good sign, I think. It means a person is bursting to say something, and that shows interest.
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I realize my level of boringness dramatically varies depending on whom I am speaking with. Small talk is one of my least favorite things in the world, but unless I am sufficiently comfortable with someone and they have shown at least a glimpse of interestingness, our conversation is not likely to go beyond the weather. I should work on that.