AJAX is a cross-platform technique that can be use on different operating system and web application based on JavaScript and DOM. It is a powerful approach of web application technique using client-side scripting to exchange data with the web server. This means that with AJAX, web pages increases interactivity and faster responsiveness of user interface by having an independent communication with the server. Gone are the traditional ways of web browsing whereby a new page communicates with each user's request. This creates dynamic web application user interface that renders effective usability of every desktop applications. AJAX primary purpose is to increase the web page's interactivity, speed, functionality, and usability.

Ajax, by definition, is not technology. In fact, it is an application of several technologies. Ajax incorporates several existing web application like XHTML and CSS for standard-based presentation; the Document Object Model for dynamic display and interaction; XML and XSLT for data interchange between the server and the client; the XMLHttpRequest to exchange asynchronous data with the web server; and the use of JavaScript as the core code for running AJAX application.

To understand AJAX, first we must know how the traditional web application works. The classic web interface trigger an HTTP request back to web server. The server then process and retrieve data before returning an HTML page to the users. This process as a model for hypertext medium makes technical sense. But as web application evolves this process does not make the user interface more interactive and practical.

AJAX, on the other hand, eliminates this problem. AJAX speed up the loading of any web application with the use of intermediary between the user and the server called AJAX engine. This adding of another layer application of eliminates the start-stop-start-stop nature on the web. The browser loads an AJAX engine at the start of session.

The AJAX engine allows the user interface and the application to interchange data asynchronously-independent of the communication to the server. So the interaction between the user and the web never slows down, no point of waiting for the server to do something.

AJAX is a powerful technique that grows exceedingly as web application. That is, AJAX is now part of the guiding principle as web 2.0 flourishes and become a practical reality. With the power of AJAX, many of the business and marketing web site are integrated with AJAX application server platform now. Most of the major products of Google such as Gmail, Google Maps, and Google Suggest are employing AJAX application. Other web services like the photo-sharing application Flickr, Amazon's A9.com, and the new Yahoo! maps depends on AJAX. The application of AJAX comes from simple function to the most complex program like Google Maps.

Sites that require users to log in to access certain information and/or purchase products add an additional layer of potential complication to the usability process. To avoid potential visitor confusion and the possibility for errors, it is important that any login process requires little or no thought on the part of the site visitor.

Once logged in, you must be sure that visitors are able to find the information they want and expect to find. My Account pages need to provide visitors with access and ability to view and change personal information, as necessary.

Login Access

Access to any login page (or the login form itself) should be available consistently across all pages of the site. Be sure the form or link is obvious and easily differentiated from other areas of the web page.

Security

If the information behind your login contains sensitive data, you need to use the appropriate security protocols, assuring visitors that that you take their information's security seriously.

Registration

If visitors are not already registered a link to a new user registration form should be present. It's also smart to have a global link to "register" for any new visitors to the site.

Account benefits

Non registered visitors should be treated to benefits of account registration. This information should be located on the same page as the new user registration form.

Lost password

All login forms should contain an option to reclaim passwords and/or username should they have been forgotten. This information must also be passed securely.

Remember me

You can provide additional convenience (though less security) by giving visitors the option of checking a "remember me" box which will allow them to stay logged in indefinitely.

Privacy

Provide a link to your sites privacy information/policy near the login form submit button or email field. This gives your visitors confidence that you will treat their information with respect.

Status

The visitor's "logged in" status should be displayed at all times with a ready access to logout at their convenience. When additional security is necessary it's a good idea to automatically log them out after a set period of inactivity.

Change info

Once logged in, visitors should have access to change their user information, including usernames, passwords, contact info, payment details, etc.

Change confirmation

Once the visitor has submitted their information to be changed, provide a confirmation screen that shows the old and new info. This prevents errors and helps insure information remains accurate.

Financial details

Provide links to relevant financial information such as transaction history, invoices, balances, payment methods, etc. Provide printable version of this information.

Up-sell opportunities

Visitors that are logged in provide you an interested, captive audience. Consider discreetly utilizing up-sell opportunities - without being overbearing.

Subscribed services

Provide visitors access to the information/services to which they are subscribed. Also provide additional subscription options, if applicable.

Information management

Allow users to change the way they receive information, providing alternate methods such as snail mail, HTML or text based emails or to turning off communication entirely.

When visitors create an account with you they are making a commitment to you to enjoy the services or information that you provide. It's important not to let the usability process break down after visitors are committed. In fact, it's even more important to treat registered visitors respectfully and appropriately, ensuring they have access to the information they need. This develops long-term relationships and keeps them coming back.

So you are passionate about a particular subject and you want to take your passion online. At this point you may not know where to start and this is where I hope I can help you. After all you deserve to share your passion with others and they will benefit from it also.

The key to building any website is to build it with your visitor in mind. What can you truly do for them that will add value to their experience when visiting your site? Let's take for example that you enjoy building model planes. The first place you are going to visit is the online forums.

The reason I choose forums is because this is where conversations take place relative to any given topic. This will give you a measure of interest. The first step is to see how up to date the forum is and secondly how many posts it receives per day. Additionally how many people respond to those posts on any given day?

Obviously the more the better, the more interest the better for you. The next thing you are going to look for is, what are the questions being asked and can you engage in the conversation and offer solutions. If this is the case your next task is to look for keywords. What keywords do people use to seek out solutions for their needs?

The next thing to do is look for a keyword tool. I am going to use Google's keyword tool for this example. Keyword tools by the way are not by any standard of the imagination an exact science. They give you a rough guide as to how many times a given keyword is searched. So do not think that the numbers you get are exact.

Your task right now is to develop a list of keywords.

Once you have this list you are now going to look at the level of competition. Starting out we do not want too much competition but remember competition is good as it means there is money to be made in that market.

We at this point are just looking for cheaper ways to enter the market. To do this enter your keyword into the search box in quotes. Then check how many websites are coming up for that keyword. If it is in the millions that is not good if it is in the thousands then that is great.

You will now be refining your list based on competition. Once the list is completely refined you will now have the general structure of your site. These keywords will make up individual web pages.

To conclude this is how to lay the foundation then once you have these keywords you will be ready to structure each of the pages on your site using each individual keyword with content relative to that. To learn how to put all this together select any of the links provided.