Different types of ecommerce models, which is your favorite?

[Kane]

Generally speaking, there are 6 common types of ecommerce businesses:
Business to Consumer or B2C: This is the most popular ecommerce business model and Amazon rules the market
Business to Business or B2B: Alibaba is basically a B2B ecommerce
Business to Government or B2G: This type of ecommerce provide services for the government
Consumer to Consumer or C2C: eBay and etsy are basically C2C ecommerce
Consumer to Business or C2B: In this e-commerce model, consumers provide services for Businesses
Consume to Government or C2G: IN the e-commerce model, common people offer services to the government.
What kind of ecommerce you are doing?