I came across Adrian Hamza’s blog today.  His blog seems to be totally dedicated to the Sharepoint Adapter for Biztalk. 

It looks like it will be a great resource for information on anything related to Sharepoint and Biztalk integration.

The post I like best gives a detailed comparison between the GotDotNet Sharepoint Adapter and the new Biztalk 2006 Sharepoint Adapter. 

I think the best new “feature” of the Sharepoint Adapter is that it will be supported by Microsoft.  I know this has held up a lot of customers from using it in the past.