Hi,
I'm currently involved in integrating SharePoint with IBM Connections and I'm having a lot of fun trying to figure out all the possibilities. Since these integration considerations are not specific to SharePoint/IBM Connections, I'll blog a series of posts which will be rather short or rather long according to the topic I'm focusing on.
In this post, I'm going to focus on the SharePoint Cross-Domain library which turns out to be suitable only in some scenarios.
Read this one first
Make sure you read this post first http://www.silver-it.com/node/150