Web 2.0 tools like blogs, RSS feeds, social media sites, and file sharing services are becoming increasingly popular ways for information to spread online. These tools, which include Blogger, WordPress, MySpace, YouTube, Delicious, Digg, Flickr and more, allow for easy publishing and sharing of content across the internet. Many Web 2.0 services are free to use.

1. Web 2.0 Tools:Web 2.0 technologies are changing the way messages spread across the Web. Web 2.0 tools such as weblogs, RSS, video casting, social bookmarking, social networking, podcasts and picture sharing sites are becoming more and more popular. One major advantage of Web 2.0 tools is that the majority of them are free.There are a large number of Web 2.0 tools, some of the more popular ones are:Blogger WordpressMyspaceYoutubeMetacafeDel.icio.usDigFurlTwitterFlickr