As mentioned in the New Feature: Trophies and Titles thread, the forum now supports reactions to posts, and people reacting to your posts will award you trophies as well.
To react to posts, look for the thumbs up "Like" button in the bottom right near the reply button:
This will let you choose one of the reactions:
To react to posts, look for the thumbs up "Like" button in the bottom right near the reply button:
This will let you choose one of the reactions: