Michael Sampson's 7 Pillars Analysis of Microsoft SharePoint 2007 is now available. Michael has used his 7 Pillars model to analyse SharePoint 2007 and concludes:
"On its own merits, SharePoint fails the needs of teams for collaborative software in 6 out of the 7 areas. It thus passes only one of the areas on its own merits, and it passes an additional two areas if the organization adds additional server software from Microsoft. However, using the software available from Microsoft, it earns a failing grade in 4 out of the 7 areas."
To try before you buy, down the free summary document.