I'm impressed with the Salesforce Development cookbook, but one thing I can't get my head around is how you manage some of the meta-data that the Dev Save Changes plan will pull down (maybe I'm missing something). Most package.xml files will contain profiles - for my org - when I currently fetch metadata using Ant (manually) it pulls down so much info including some inclusions that we can't deploy (but salesforce seems to add) like Social-Persona info - that I need to manually remove or exclude from GIT. How might you handle this in an automated workflow ?