If you're even remotely connected to web development, you can't have failed to have heard of Ajax at some point in the last year. It probably sounded like the latest buzzword and was one of those things you stuck on the 'must read up on later' pile. While it's definitely a buzzword, it's also quite a useful one.
Found this very useful article on perl.com. I've recently added some asynchronous JavaScript calls to my Perl code. The feedback from users has been positive.
