The not-so-official Microsoft Australia Small Business Server blog
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Microsoft Outlook with Business Contact Manager is an often overlooked solution for small businesses - but it really could work well for your customers.
Some great resources uncovered by my UK colleague & SBS super-guru, David Overton:
http://uksbsguy.com/blogs/doverton/archive/2008/02/13/business-contact-manager-team-blog-good-information-including-slq-and-vba-tools-smartphone-and-product-information.aspx
http://uksbsguy.com/blogs/doverton/archive/2008/02/13/import-and-export-business-data-in-business-contact-manager-2007-outlook-with-business-contact-manager-microsoft-office-online.aspx
Whenever I talk to small businesses, the challenge of keeping customers up-to-date is always cited as a major issue, & so the BCM blog mentioned by David could be a good one to add to your RSS feeds.
Robbie