A ways down I've got a couple of lengthy comments including proposed language for an amendment.  

Frankly I don't think we can catch "spam" under "privacy," but it can be outlawed via legislation.  We can however catch all the abuses of private-sector databases.  

Eminent domain is an interesting question.  The key points I can see are "primary residence" (your actual home) and "among private-sector entities" (government shifts your home to WalMart to build one of their abominations, in order to increase the tax rolls).  But we don't want to go so far as to preclude every instance, for example the legitimate cases of real public good such as a new hospital or a regulated public utility; and we don't want to create a scenario where privately-held fiefdoms arise that are de-facto sovereign territories (it's not for nothing that we still use the word "land lord," and it's high time to do something about that also, though it's not a privacy issue per se).