One of the most fun things to do as a gamer is to grind for trophies and or badges. With that said, badges/trophies are included in the public forum and it will be displayed under your avatar. You'll level up the more you post and reply to posts. Of course, posting takes time so post that are spam and full of spam link will be deleted. Badges only apply to public forums. I've attached a picture for you to see the trophies you'll be earning. 

On the lighter side, don't bother searching for what is the max amount of post to reach the highest level trophy, since I'm the one that sets the post amount goal. I mean, what fun would that be if you knew! You want to fine out? Start posting and participating. 

If you have any question, ask in the Q&A section