Web 2.0 is a new generation of website that visitors can participate in, not just look and read the website. It seems like Web 2.0 creates a community or social network on the Internet. Therefore, it is very useful for any business.

Marketing
Web 2.0 is a kind of niche marketing. Visitors can create their own contents on some websites they go to, such as Myspace, YouTube, and Ebay. So there will be a lot of database that can be used in marketing.

Advertising
In the past, one had to create his own website to advertise his products. If people want to know those products, they needed to go to the website. However, they do not need to go to the website, but any search engine. Then they will get a lots of websites related to what they are wanting. They may experience some website having video clips showing how to use a product, such as YouTube.

Buying and Selling
Web 2.0 helps sellesr to reduce costs so that their products will be cheaper. For example, people can buy things from other countries through Ebay. It is very convenience. And sellers do not need to pay any transpotation cost and comissionsa for a middleman.

Promotion
Sellers can use the word-of-mouth strategy to promote their products through any Blog. They do not have to pay for ads on TVs. People may buy or not buy things when they read from any blog because it is experience from ones using it.

Information
Sellers can post details or infomation of their products on the websites of them, no need to print out lots of brochures and give it to customers.