MS Press in Singapore right now has a great offer if you’re a member of any of the technical communities in Singapore. Buy a book online from and you get a 30% discount if you’re a member of any of these groups:

Singapore Windows IT Pro Users Group
Singapore Professional .NET Users Group
Sharepoint Professionals Group
Small Business Server Users Group
SQL Server Users Group

You also stand the chance to win prizes like Office 2007, xBox and Windows Home Server.

Detail about the offer and what promo code to use is on Dennis blog