Business' use them for example for sharing sales information - as they can re-use the information
Weblogs are informal yet structured Web sites where registered users can post (publish): stories opinions links to other websites.
Maintain public blogs, Research customers, Customers can add commnets, present new products and services, Communicate with employees
The technologies and services that distinguish web 2.0 include cloud computing software mashups and widgets blogs RSS wikis
Create new services online
retailing services/products to shoppers
sales amongst businesses
consumers selling directly to consumers