How Web 3.0 Will Work

Out of all the Internet buzzwords and jargon that have made the transition to the public consciousness, "Web 2.0" might be the best known. Even though a lot of people have heard about it, not many have any idea what Web 2.0 means. Some people claim that the term itself is nothing more than a marketing ploy designed to convince venture capitalists to invest millions of dollars into Web sites. It's true that when Dale Dougherty of O'Reilly Media came up with the term, there was no clear definition. There wasn't even any agreement about if there was a Web 1.0.

Other people insist that Web 2.0 is a reality. In brief, the characteristics of Web 2.0 include:

Think of Web 1.0 as a library. You can use it as a source of information, but you can't contribute to or change the information in any way. Web 2.0 is more like a big group of friends and acquaintances. You can still use it to receive information, but you also contribute to the conversation and make it a richer experience.

While there are still many people trying to get a grip on Web 2.0, others are already beginning to think about what comes next. What will Web 3.0 be like? How different will it be from the Web we use today? Will it be a revolutionary shift, or will it be so subtle that we won't even notice the difference?

What do Internet experts think the next generation of the World Wide Web will be like? Keep reading to find out.

Internet experts think Web 3.0 is going to be like having a personal assistant who knows practically everything about you and can access all the information on the Internet to answer any question. Many compare Web 3.0 to a giant database. While Web 2.0 uses the Internet to make connections between people, Web 3.0 will use the Internet to make connections with information. Some experts see Web 3.0 replacing the current Web while others believe it will exist as a separate network.

It's easier to get the concept with an example. Let's say that you're thinking about going on a vacation. You want to go someplace warm and tropical. You have set aside a budget of $3,000 for your trip. You want a nice place to stay, but you don't want it to take up too much of your budget. You also want a good deal on a flight.

With the Web technology currently available to you, you'd have to do a lot of research to find the best vacation options. You'd need to research potential destinations and decide which one is right for you. You might visit two or three discount travel sites and compare rates for flights and hotel rooms. You'd spend a lot of your time looking through results on various search engine results pages. The entire process could take several hours.

According to some Internet experts, with Web 3.0 you'll be able to sit back and let the Internet do all the work for you. You could use a search service and narrow the parameters of your search. The browser program then gathers, analyzes and presents the data to you in a way that makes comparison a snap. It can do this because Web 3.0 will be able to understand information on the Web.

Right now, when you use a Web search engine, the engine isn't able to really understand your search. It looks for Web pages that contain the keywords found in your search terms. The search engine can't tell if the Web page is actually relevant for your search. It can only tell that the keyword appears on the Web page. For example, if you searched for the term "Saturn," you'd end up with results for Web pages about the planet and others about the car manufacturer.

A Web 3.0 search engine could find not only the keywords in your search, but also interpret the context of your request. It would return relevant results and suggest other content related to your search terms. In our vacation example, if you typed "tropical vacation destinations under $3,000" as a search request, the Web 3.0 browser might include a list of fun activities or great restaurants related to the search results. It would treat the entire Internet as a massive database of information available for any query.

How might Web 3.0 do this? Read on to find out.

You never know how future technology will eventually turn out. In the case of Web 3.0, most Internet experts agree about its general traits. They believe that Web 3.0 will provide users with richer and more relevant experiences. Many also believe that with Web 3.0, every user will have a unique Internet profile based on that user's browsing history. Web 3.0 will use this profile to tailor the browsing experience to each individual. That means that if two different people each performed an Internet search with the same keywords using the same service, they'd receive different results determined by their individual profiles.

The technologies and software required for this kind of application aren't yet mature. Services like TiVO and Pandora provide individualized content based on user input, but they both rely on a trial-and-error approach that isn't as efficient as what the experts say Web 3.0 will be. More importantly, both TiVO and Pandora have a limited scope -- television shows and music, respectively -- whereas Web 3.0 will involve all the information on the Internet.

Some experts believe that the foundation for Web 3.0 will be application programming interfaces (APIs). An API is an interface designed to allow developers to create applications that take advantage of a certain set of resources. Many Web 2.0 sites include APIs that give programmers access to the sites' unique data and capabilities. For example, Facebook's API allows developers to create programs that use Facebook as a staging ground for games, quizzes, product reviews and more.

One Web 2.0 trend that could help the development of Web 3.0 is the mashup. A mashup is the combination of two or more applications into a single application. For example, a developer might combine a program that lets users review restaurants with Google Maps. The new mashup application could show not only restaurant reviews, but also map them out so that the user could see the restaurants' locations. Some Internet experts believe that creating mashups will be so easy in Web 3.0 that anyone will be able to do it.

Other experts think that Web 3.0 will start fresh. Instead of using HTML as the basic coding language, it will rely on some new -- and unnamed -- language. These experts suggest it might be easier to start from scratch rather than try to change the current Web. However, this version of Web 3.0 is so theoretical that it's practically impossible to say how it will work.

The man responsible for the World Wide Web has his own theory of what the future of the Web will be. He calls it the Semantic Web, and many Internet experts borrow heavily from his work when talking about Web 3.0. What exactly is the Semantic Web? Keep reading to find out.

Tim Berners-Lee invented the World Wide Web in 1989. He created it as an interface for the Internet and a way for people to share information with one another. Berners-Lee disputes the existence of Web 2.0, calling it nothing more than meaningless jargon [source: Register]. Berners-Lee maintains that he intended the World Wide Web to do all the things that Web 2.0 is supposed to do.

Berners-Lee's vision of the future Web is similar to the concept of Web 3.0. It's called the Semantic Web. Right now, the Web's structure is geared for humans. It's easy for us to visit a Web page and understand what it's all about. Computers can't do that. A search engine might be able to scan for keywords, but it can't understand how those keywords are used in the context of the page.

With the Semantic Web, computers will scan and interpret information on Web pages using software agents. These software agents will be programs that crawl through the Web, searching for relevant information. They'll be able to do that because the Semantic Web will have collections of information called ontologies. In terms of the Internet, an ontology is a file that defines the relationships among a group of terms. For example, the term "cousin" refers to the familial relationship between two people who share one set of grandparents. A Semantic Web ontology might define each familial role like this:

For the Semantic Web to be effective, ontologies have to be detailed and comprehensive. In Berners-Lee's concept, they would exist in the form of metadata. Metadata is information included in the code for Web pages that is invisible to humans, but readable by computers.

Constructing ontologies takes a lot of work. In fact, that's one of the big obstacles the Semantic Web faces. Will people be willing to put in the effort required to make comprehensive ontologies for their Web sites? Will they maintain them as the Web sites change? Critics suggest that the task of creating and maintaining such complex files is too much work for most people.

On the other hand, some people really enjoy labeling or tagging Web objects and information. Web tags categorize the tagged object or information. Several blogs include a tag option, making it easy to classify journal entries under specific topics. Photo sharing sites like Flickr allow users to tag pictures. Google even has turned it into a game: Google Image Labeler pits two people against each other in a labeling contest. Each player tries to create the largest number of relevant tags for a series of images. According to some experts, Web 3.0 will be able to search tags and labels and return the most relevant results back to the user. Perhaps Web 3.0 will combine Berners-Lee's concept of the Semantic Web with Web 2.0's tagging culture.

Even though Web 3.0 is more theory than reality, that hasn't stopped people from guessing what will come next. Keep reading to learn about the far-flung future of the Web.

Whatever we call the next generation of the Web, what will come after it? Theories range from conservative predictions to guesses that sound more like science fiction films.

Here are just a few:

It's too early to tell which (if any) of these future versions of the Web will come true. It may be that the real future of the Web is even more extravagant than the most extreme predictions. We can only hope that by the time the future of the Web gets here, we can all agree on what to call it.

To learn more about Web 3.0 and other topics, take a gander at the links on the next page.