Yes, it's HOW you communicate! And yes, you do communicate quite well. An intelligent person can make conversation out of the most mundane to quite challenging topics. And yes, your posts do indicate that you're intelligent. I sort of poo-poo the idea if an IQ score. Some people have high scores but do nothing much with it. Others with a lower IQ may do much more. It is by no means a measure of your worth! Aaaaaannnnnnddddd IQ doesn't measure all types of intelligence! Some people are emotionally intelligent, others have social intelligence, and so on. And, if you're dealing with any sort of impairment (learning, mental), then your score can be negatively impacted.

Try not to worry about your score too much. You're SO much more than a number!