It's been a while since I last posted (has it really been over a year?!). So with the recent release of SharePoint 2010, I should have some good stuff posted over the next six months. Particularly, I have a few SharePoint 2010 deployments on my schedule and will be posting lessons learned from each project upon completion. In the meantime, Microsoft has a nice SharePoint 2010 Edition Comparison site now available. As you will see, SharePoint Foundation has some powerful functionality for a free product:
http://sharepoint.microsoft.com/en-us/buy/pages/editions-comparison.aspx