Quote Originally Posted by Oxygent View Post
"Что вы думаете" is used when there's an object ("Что вы думаете о порядке слов в этой фразе?") and is similar to English "What do you think about the word order in this phrase?"
"Как вы думаете", on the other hand, is a complete simple sentence. "Как вы думаете, порядок слов в этой фразе правильный?" - "What do you think, is the word order correct in this phrase?"
Sweet. Didn't know that, now I do.