It is business social network and i think it is no.1 Business social network, You can meet like minded people who owns products,services,sites etc. you can promote your business by creating articles,review pages and brand pages to show thousands by Free and Paid options. If you want to earn you can sell your talents by completing tasks when someone need it, also you can earn by affiliate program.
It may seem like a typo but there really is Apsense. It's basically for sharing business information and another way for us to monetize our products. You can join groups, create partnerships etc.