1. CONSUMER TO CONSUMER

2. Types of E-commerce Classified by nature of market relationship
Business-to-Consumer (B2C)
Business-to-Business (B2B)
Consumer-to-Consumer (C2C)
Classified by type of technology used
Peer-to-Peer (P2P)
Mobile commerce (M-commerce)

3. Major Types of E-commerce

4. Consumer-to-Consumer (C2C) E-commerce
It facilitates the online transaction of goods or services between two peoples.
However, there is not visible intermediary involved, but the parties cannot carry out the transactions without the platform, which is provided by the online market such as eBay.
Examples:
Advertisement of personal services over the internet.
Selling of knowledge and experts online.

5. C2C e-commerce ‏
In the C2C e-commerce, the consumer lists items for sale with commercial auction site.
The participants in C2C ecommerce are unknown, not trusted parties to sell goods and services to another one.
Example of C2C ecommerce web is eBay, where consumers sell their goods and services to other consumers;
And PayPal (instead of purchasing goods and services directly from the unknown, entrusted seller, the buyer can send money to the PayPal.
Then the PayPal notifies the seller that they will hold the money for them until the goods have been shipped and accepted by the buyer).

6. Websites engaged in C2C
ebay.com
ICQ.com
MSN.com
bidorbuy.com

7. P2P
P2P peer to peer technology enables internet users to share files and computer resources directly without having to go through a central web server.
Napster.com which was established to aid Internet users in finding and sharing online music files known as MP3 files is perhaps the most well known example of peer to peer e-commerce.

8. M-Commerce
Mobile commerce refers to the use of wireless digital devices to enable transactions on the web. They utilize wireless networks to connect cell phones and handheld devices such as:
Cellular phones
Hand-held computers such as palmtops, tablets PCs
Messaging/pager devices
Personal digital assistants (PDAs)