Hi DavidR,
I can confirm I have read something in a similar line here form an avast! team member. I remembered the Google Analytics bit. If the metadata only are anonymized interface preference details, then what could be the problem? Too many users here with PRISM conspiracy fed ideas i.m.h.o. or just a form of trolling!
If you put a photo of your room on line you also send along the geo-location metadata, and some party could know where you live. Well we have that technology now and have to live with it, but that is not to say that anyone is actually complaining about these features…
polonus