There is a service called "Yahoo Answers" where people post questions
and other people can give their opinions for the answer to the
question.

At the following question:
http://answers.yahoo.com/question/index;_ylt=Avu55zNy6w97IayCBNb.z1PD7BR.;_ylv=3...
or
http://tinyurl.com/2mn8oa

The question is:
Girls, where do you feel most comfortable with a guy approaching you?

The answers (so far) were:
at the bar, because i'm drunk
at the mall if i'm not by myself.
Anywhere as long as you're cool and not creepy about it.
Never. Unless I approach first.
Anywhere as long as he is respectful