Compliment, or wish the player good fortunes above you! even strangers!
Player A: You are very kind!! I hope you have a wonderful day! ^_^
Player B: Player A, I love the way you build! they are admirable! keep up the good work!
Player C: I don’t really know you, But i love your pfp. i’m a huge Marvel Fan! :)
Now go on! & spread positivity! ^_^!