What is Web 2.O ?
"Web 2.0" refers to second generation of web development and design, that make easy communication, secure information sharing, and collaboration on the World Wide Web. Web 2.0 concepts have led to the development and evolution of web-based communities and applications, for example social-networking sites, video-sharing sites, wikis, blogs etc.
Web 2.O examples:
- Facebook
- Youtube
- Flickr
- MySpace
| Web 1.0 |
|
Web 2.0 |
| DoubleClick |
-- |
Google AdSense |
| Ofoto |
-- |
Flickr |
| Akamai |
-- |
BitTorrent |
| mp3.com |
-- |
Napster |
| Britannica Online |
-- |
Wikipedia |
| personal websites |
-- |
blogging |
| evite |
-- |
upcoming.org and EVDB |
| domain name speculation |
-- |
search engine optimization |
| page views |
-- |
cost per click |
| screen scraping |
-- |
web services |
| publishing |
-- |
participation |
| content management systems |
-- |
wikis |
| directories (taxonomy) |
-- |
tagging ("folksonomy") |
| stickiness |
-- |
syndication |
Bloging
Bloging is the strongest feature of the Web 2.0. Earlier their was concept of Personal home pages.
A blog (a contraction of the term weblog) is a type of website, usually maintained by an individual with regular entries of commentary, descriptions of events, or other material such as graphics or video. Entries are commonly displayed in reverse-chronological order.
Many blogs provide commentary or news on a particular subject; others function as more personal online diaries. A typical blog combines text, images, and links to other blogs, Web pages, and other media related to its topic. The ability for readers to leave comments in an interactive format is an important part of many blogs. Most blogs are primarily textual
RSS
RSS is the most significant advance in the fundamental architecture of the web since early hackers realized that CGI could be used to create database-backed websites. RSS allows someone to link not just to a page, but to subscribe to it, with notification every time that page changes.
Ajax
"Ajax isn't a technology. It's really several technologies, each flourishing in its own right, coming together in powerful new ways. Ajax incorporates:
- standards-based presentation using XHTML and CSS;
- dynamic display and interaction using the Document Object Model
- data interchange and manipulation using XML and XSLT
- asynchronous data retrieval using XMLHttpRequest
- and JavaScript binding everything together."
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