We added a new feature to the site, you can rate the posts in the “Learning” and “Tips & Tricks” sections. You’ll find the 5 yellow stars under the topics title. Sign in is needed to give stars for an article. Later on it enables a to make a sidebar which shows the best rated posts in the future.
In the forum, we put a like/dislike button, so you can vote for the replies that answers the questions given in a topic. Signing in need here as well.
Update: due to the lack of interest, we discontinued this feature.