Twitter is an awesome example of how a basic idea can be evolved into something huge. Started as the way to tell the world "What you are doing", it now has hundreds of various uses.
This is how social media works: you start a social media project and people will make it into what it should be. There is no way to control that.
Various people have different opinions on how Twitter should be used. To my mind, it is up to everyone. I am not a big fan of Twitter ethics: if you don’t like someone, just don’t follow him!
That being said, everyone has the right to use Twitter the way he wants. Would you like to know which group of Twitter users you fall into?
Here’s a quiz I made (with Gerald’s help of course) that will help you define your Twitter user type.
You are highly encouraged to share your result in the comments. You can also Tweet your result, embed it to your blog or share on facebook. Good luck!