Web 2.0 stands for the Second Generation of World wide Web. The phrase Web 2.0 was coined by O'Reilly Media (a publisher of computer literature) in 2004. Previously World Wide Web was a collection of websites but now it is a completed computing platform serving web applications to end users and the main trend is to replace desktop computer applications and put them on the web for users that's why Web 2.0 is going to be source, media and platform for many purposes.

 Currently Web 2.0 includes services such as social networking sites, wikis, many communication tools, folksonomies, online office & productivity applications, etc. Web 2.0 is focusing on collaboration and sharing among users. Web 2.0 also refers to a more organized and categorized content, with more developed web architecture than before. A shift in economic value of the Web, possibly surpassing that of the dot com boom of the late 1990s.

 A Web 2.0 website typically features a number of the following techniques:

 • Ajax-based rich Internet application techniques

 • Non-Ajax-based rich Internet application techniques

• CSS

• Semantically valid XHTML markup and/or the use of Microformats

• Syndication and aggregation of data in RSS/Atom

• Clean and meaningful URLs

• Extensive use of folksonomies (in the form of tags or tagclouds, for example)

• Weblog publishing

• Mashups

• REST or XML Webservice APIs

Tips for your web2.0 startup:

Keep length at a short and meaningful.

Be generic or original about your content.

Encourage Word of Mouth about your blog or website.

Avoid Using Hyphens and capture the .com this will help to get more traffic.