1. Peer-to-peer sales platforms (eBay, Etsy, Amazon Marketplace): Community-based marketplaces, or bazaars, where individuals communicate and sell directly to other individuals.
2. Social network-driven sales (Facebook, Pinterest, Twitter): Sales driven by referrals from established social networks, or take place on the networks themselves (i.e., through a “shop” tab on Facebook).
3. Group buying (Groupon, LivingSocial). Products and services offered at a reduced rate if enough buyers agree to make the purchase.
4. Peer recommendations (Amazon, Yelp, JustBoughtIt): Sites that aggregate product or service reviews, recommend products based on others’ purchasing history (i.e. “Others who bought item x also bought item y,” as seen on Amazon), and/or reward individuals for sharing products and purchases with friends through social networks.
5. User-curated shopping (The Fancy, Lyst, Svpply): Shopping-focused sites where users create and share lists of products and services for others to shop from.
6. Participatory commerce (Threadless, Kickstarter, CutOnYourBias): Consumers become involved directly in the production process through voting, funding and collaboratively designing products.
7. Social shopping(Motilo,Fashism,GoTryItOn). Sites that attempt to replicate shopping offline with friends by including chat and forum features for exchanging advice and opinions.
"In particular, newsletters that included social sharing buttons had an average click-through rate 158% higher than those that lack such features, according to the email marketing specialists at GetResponse."