Users can evaluate the Contents in Rulz (Posts, Replies, sample programs,etc)By clicking "Like" displayed at the bottom of the content, you can express the intention that the content is a good write.You can click only once for 1 content.
When you click "Like", the display becomes "Unlike + number".The number indicates the number of users who clicked "Like" for that content.
If you want to cancel "Like" you clicked, click "Unlike".