How does it differ from web 3.0?

Web 3.0 seems to be the newer version of web 2.0. Facebook, YouTube and the other social networks and blogs that fall within the scope of 'Web 2.0'.

According to the Times Online, "in a little over a decade, according to the engineers building the internet of tomorrow, the web will be able to connect every aspect of our digital lives - be it a website, an e-mail, or a file on our PC - to every other aspect. It will know, for instance, when you are typing an e-mail, what the subject of the e-mail is, and be able to suggest websites and books as well as documents, photos and videos you have saved that may be relevant to that topic." http://technology.timesonline.co.uk/tol/news/tech_and_web/the_web/article2726190.ece

Mr. Spivack, the founder of Radar Networks, a leading Web 3.0 company, says, "We have had the first decade of the web, or Web 1.0," which was about the development of the basic platform of the internet and the ability to make huge amounts of information widely accessible, "and we're nearing the end of the second decade - Web 2.0 - which was all about the user interface" and enabling users to connect with one another.
"Now we're about to enter the third decade - Web 3.0 - which is about making the web much smarter."

There seems to be confusion as to how much the semantic web and web 3.0 differ. It is apparent that the semantic web will develop when web 3.0 does and vice versa, meaning that we are still in the era of web 2.0. By adding the semantic web to Web 2.0, critics argue that the closer to web 3.0 we will get. So there is difference between web 3.0 and the semantic web, albeit a very small one. Both seem to rely on each other to develop and operate.