Learning AJAX APIs Made Easier: Google Releases API Playground

http://www.readwriteweb.com/archives/learning_ajax_made_easier_google_api_playground.php

Microsoft SDKs

Check this...

http://msdn.microsoft.com/en-us/dd299405.aspx

Designing Effective User Interface

Hi check this...

http://web.cs.wpi.edu/~matt/courses/cs563/talks/smartin/int_design.html

Mamooty in 'Pattanathil Bhootham'

Enthokke Kaananam ente eeshwaraaaaaaaa............

12 useful techniques for good user interface design in web applications

http://www.smashingmagazine.com/2009/01/19/12-useful-techniques-for-good-user-interface-design-in-web-applications/

Web Design Trends for 2009

http://www.smashingmagazine.com/2009/01/14/web-design-trends-for-2009/