What are great legs on women? Do you judge your own?

Sounds ridiculous but I'm clueless when it comes to legs so:

Guys/Girls: What defines great legs? Do you check out legs? Is it important?

Girls: How do you examine/criticize/appreciate your own?
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I love how on questions like these someone comes along and down votes people who either like what they don't or what they're not.
What are great legs on women? Do you judge your own?
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