Sites with latest news on Ajax - WEB 2.0

Ajaxian : popular ajax blog

Ajax Impact : news, tutorials, articles, vendors,

Mir.aculo.us : ajax news blog

Vitamin : resource for web designers, developers and entrepreneurs

Web2.0 Central : profiles companies and startups building web based applications using technologies like Ajax, Ruby on Rails, Flash, RSS, Open API’s and assorted web based application development tools.