Personally, I moved from Boxee to XBMC when I noticed that Boxee was calling back to boxee.tv every time I watched a video, telling them what I was watching. Even if it was just a local video file. With no option to turn that off. And with them ignoring my emails asking for information when I contacted privacy@boxee.tv.
Well, that's sort of the entire purpose of Boxee. Or at least, it was. It was the "Social Media Player", that allowed you and friends to see what each other were watching, etc. I think they've moved on from that a little now that they've seen that people don't particularly want that.
https://grepular.com/Boxee_TV_Helps_Its_Self_To_Your_Viewing...