Businesses should beware of adding too many Web 2.0 features to their websites, and instead concentrate on getting the basics of user experience right.
This is the view of web usability guru Jakob Nielsen, who argues in his latest post that, while features like user reviews can benefit consumers, others can make sites overly complicated.
RIAs like Ajax often have an accessibility weak spot since they need to work with JavaScript off to meet the basic accessibility guidelines.
Rumour has it that the next version of the popular screen reader Jaws may be able to handle Ajax interfaces.
In another indication of growing interest among VCs in Web 2.0 outfits, Netvibes has raised US$15 million in a round of financing led by existing backer Index Ventures.
The Paris and London-based start-up, which claims to have recruited five million users of its customisable Ajax home page, plans to use the funding to help it take on rivals such as Microsoft's Live.com and Pageflakes.