Polite, Conversation, Urban (slang) English & Email
Subject: "What do you think?"
Formal English (extra polite):
1. May I ask your opinion?
2. Please share with me your thoughts.
Casual Conversation English
3. Wacha think? (spoken English for "What do you think?")
4. How do YOU see it? (empasis on the "you")
5. What say you?
6. What you be thinking?
Text (email with PC or Phone)