Web 2.0

Before Web 2.0 all you can do on the internet is retrieve information. With the reemergence of the term around 2004 it has made information sharing, interoberability, user-centered design, and collaboration on the World Wide Web possible. You are now capable of adding, changing, disseminating and sharing information around the globe through sites like Blogspots, Wikipedeia, Facebook, JavaScript and youtube.
It has also benefited businesses all over. Communicating with other people has never been this easy and cheap. you can get in touch with other people just by using the web. you can order food, clothes, materials etc. you can share your thoughts and personal information with millions of users through blogs, vlogs and social media networks!
A lot of businesses use this technology to their advantage. they have set-up sites where you can easily access their products and services. They have cut costs significantly.