I've heard people say this in the past, but I find intelligence attractive.
Well, it depends on how they treat their intelligence.
Nope. When you grow up with brilliant siblings, you grow immune to awe of intelligence.
But I admit, unless you are passionate about your conversation choice, I will probably grow bored talking to you if the topic is over my head. Intelligence in a book smart way can be great but it also can be a negative if all you have is the head knowledge and no actual interest in what you are conversing about. So intelligence in and of itself is boring unless there is a drive behind it.
Well, it depends on how they treat their intelligence.
There is no such thing as general intelligence as far as I am concerned. People have different forms of intelligence in certain areas. Some people are more well balanced, while others are extremely talented in some things, such as math, while completely unintelligent in other areas (like social skills).