Hello ladies and gentlemen. Using this blog post I want to introduce and try myself as an author. To make this meeting more productive, I'm going to write about an instrument to rate something. We have a commonly used visual element such as "stars" in the Internet: For example: We also have a new trend - rate instruments of 3rd party services such as Facebook and Vkontakte "Likes", that allow to rate the blog post only in the positive way. We will talk about them another time, think if that trend is good or bad. Now I'm going to show a few implementations of traditional stars.