A new Webcredibles article, AJAX accessibility for websites, highlights some of the potential benefits and disadvantages of AJAX technologies.
The section on recommendations for AJAX and accessibility was particularly useful, and a lot of the advice probably applies to non-traditional browsers such as mobile phone users. Basically:
- Inform users early in the page that dynamic updates will occur
- Highlight the areas that have been updated
- Don't change the focus
- Offer the option to disable automatic updates