So the term social media has many use cases differing from people to people but the sole purpose being expressing opinions and creating meaningful discussion which upto an extent is what bbs is also doing

How does regular social media platforms work?

Well in most of the interactive media platforms almost all are creators in a way whether it's through posting about your interests or opinions but only a small percentage of people are rewarded for doing this as the monopoly goes only people with a good amount of supporters or viewers can earn as creators and all the others are consumers as things work in a centralised system 

How is bbs changing this situation?

As far as bbs goes bbs stands for rewarding each and every potential view and by doing this rewarding almost all potential creators for the amount of content they create without valuing how small or big the creator is and making posts available in a single page than  customised for posts and suggestions for different types of users and by doing this eliminating a centralised monopoly system