AJAX: It's better with jQuery
In the past, when writing up introductions to AJAX or going over the pros and cons of using AJAX with my clients for their projects, I used to give long, in-depth disclaimers and warnings for using AJAX techniques: regaling tales of worst-case scenarios and horror stories of lost browser functionality, not-to-mention ruined accessibility for special needs users. While some of those concerns are still valid, much of the "implementation dread" has pretty much ended with jQuery.
As with all things jQuery that we've learned so far, the point is to create great enhancements that degrade gracefully down to basic, working HTML functionality. You'll find the same holds true for AJAX techniques so long as they're thoughtfully implemented with jQuery. If the core content or functionality of your site can be accessed and retrieved without JavaScript enabled in the browser, you'll find that all your users, no matter what their browser or accessibility requirements are, should...