In a further attempt to invade our lives, the government is now arguing that you have no reasonable expectation that your email is private. 

On October 8, 2007, the United States Court of Appeals for the Sixth
Circuit in Cincinnati granted the government's request for a full-panel
hearing in United States v. Warshak case centering on the right of
privacy for stored electronic communications. At issue is whether the
procedure whereby the government can subpoena stored copies of your
e-mail -- similar to the way they could simply subpoena any physical
mail sitting on your desk -- is unconstitutionally broad.

Essentially the government's argument is that since almost all ISP agreements (including my own) allow your ISP access to your files for diagnostic purposes and to prevent fraud, etc. you've already given away all reasonable expectations of privacy.  Therefore the government can simply request your email and any other hosted data without a warrant.

This is a little frightening, particularly since many companies (including my own) provide services where customer data is stored on the ISP's servers.  Quite a lot of data in some cases, that I believe my customers think are their own files. Not the government's.