Does name-calling indicate a lack of intelligence?

Anonymous
I notice that a lot of people who for one reason or another disagree with someone's opinion, resort to name-calling and insults, rather than attempt to persuade someone to take their side through the use of evidence and a solid method of argument. Just today I posted a question pertaining to types of guys and all of a sudden some guy claiming to be in his 50's started calling me names like "stupid" and saying that everyone should avoid me simply because I expressed my dislike for men of this particular group. This guy didn't even realize I used an analogy and claimed that I plagiarized my responses to him lol.

As for me, I would never curse someone out simply for disagreeing with me or for thinking that their ideas are ridiculous. I believe that there are better was to show someone that they are not thinking smartly. What do you think?
Does name-calling indicate a lack of intelligence?
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