✔ 最佳答案
In one way or another, people do judge somewhat by a person's avatar.
It could be subconscious or it could be on purpose.
For serious questions, the person who picks "Best Answer" often makes the right choice, but for questions that are for fun such as the ones in Polls & Surveys, a larger number of people choose their "Best Answer" depending on which person has a hot avatar. (It's not always the case, but it happend fuequently.)
As for me, I know better.
I've seen plenty of questions where the person even admitted to choosing the person's answer as "Best Answer" because they had an attractive avatar. It happened to me a couple times (before I changed my avatar to a giraffe . lol).
For the most part, the "popular" people on Yahoo Answers, who have attractive pictures for their avatar, often recieve more thumbs up, stars, and "fans".