As luck would have it I'm giving a small presentation on Microsoft's SharePoint Features and Solutions Framework to the Philly Office Geeks User Group during their monthly meeting on the evening of September 9th. When complete I'll see if I can post the contents of the slide deck here as well as on the Group's site.

** UPDATE **
With the site move I'm now able to have the presentation available here...SolFeat.ppt (1.16 mb)