I love to see scripts made in this language! If I remember correctly, you could create like a shoutbox or something similar and it would automatically refresh for you. Then again it could be another language that I am thinking of.
AJAX is one technique for blending a javascript front end with some other back end,thats all.If you need proof I suggest you read up a bit on AJAX. Try googling "AJAX buzzword"
AJAX isn't a language. It's just a collection of technologies given a slightly misleading acronym. It's not necessarily asynchronous and it doesn't necessarily make use of XML. In fact, JSON may be just as popular at the moment.