I wasn't upset that she didn't say thanks. Yes it is polite to say thanks for a compliment. From her original post it didn't sound like she was fishing for a compliment. She just asked would guys date someone they were not attracted too. The fact that she took her picture down after some comments were made, sounds like she is trying to gather an opinion about what the opposite sex values. I think for a lot of us, especially those who have not had a lot of relationship it is something we don't know. While everyone is different, there is usually a majority that has an opinion. For instance, being physically fit is usually preferred to those who are not. I myself don't find myself attractive, but I try not to show my insecurities, and talk about how I feel about myself. Being confident and comfortable about yourself, is generally preferred to not, But everyone is different, and we all have different values, and things we find attractive about another person.