Commerce that is driven by social networks – This type of commerce is pretty self-explanatory. Sales are driven by referrals from social networks. An example of this is the “shop” tab a company may have on their Facebook page.
Group buying – Commerce based on incentives like discounts. The basis of this type of commerce is as simple at this: the more buyers there are, the more the discount will be.
Participatory commerce – Commerce that thrives because of the involvement of users through creation, funding, and design. An example of this is the crowd-sourcing basis of Kickstarter programs.
Platforms for peer-to-peer sales – Commerce that takes place on marketplace-style platforms where buyers and sellers can communicate directly with businesses in order to promote their products or services.
Peer recommendations – Commerce based on the purchase histories and general interests of your peers. An example of this is the “Users who bought this product also bought…” feature on Amazon.