AJAX, or Asynchronous JavaScript + XML is a method of transmitting data to a browser without refreshing the page.
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This topic is advanced.
A common mistake developers make is that AJAX will automatically make their programs better. This is not always the case. Users are usually surprised to see new data appear instantly, and will often disregard or distrust it. It can also cause problems with people using old browsers or with javascript turned off. There are many potential usability and accessibility problems associated with the use of AJAX. In this article, we'll hope to address these problems.
Bleah
duh
figure it out
yeah, do that