What is the significance of Web 2.0?

I'd like to find out how this is going to change the way we use the web as well as societal implications.

What is the significance of Web 2.0?
By Web 2.0, I assume you mean the Yahoo! My Web tool. I actually use this a lot. You can think of it as something along the lines of "share-able" bookmarks. However, one of the really cool things about it is the ability to tag the pages on the net that you come across. Since the tool is in the Yahoo! Toolbar it's very easy to use (you don't have to go to a special page to add to your saved pages).





The tagging is really the key aspect, though. See the problem is, search engines can only "guess" at what they think the purpose of the pages are. They crawl millions of pages on the internet all the time, and new ones each day. So when you enter a search request, they have to go through that list and try and say "this is what you want, this is not what you want... etc."





Tagging allows communities (you, you and your friends, or everyone) to explicitly mark pages. This means that you can check out sites that are tagged to have, say "French Cooking" without neccessarily "being lucky" with a search. It saves TONS of time, and often you can find things you never would have thought of looking for.





Try it out for a few days, and check out the community tags section. I think you'll really be surprised at how useful it is.
Reply:Web 2.0 is the folk name of the new Programing way that is revolutioning the internet! It users CSS AJAX JAVASCRIPT, ETC! With web2.0 we can use programs like Outlook, Word, Powerpoint, using you web browser, that implies that on the future we will not use Sistem Operators like Windows, we just will need a Terminal Browser and all program will run via Web!! Since Web 2.0 is considered the revolution of the web, programs like skype, bittorrent, etc are considered web2.0 complaints too!