CIA's "Facebook" Program Dramatically Cut Agency's Costs

[FastTadpole]

Most phone companies keep your data for 30 to 90 days. Federal laws are in the mix to upgrade that to higher compliance and standards for storage (to catch terrorists and pedos of course).

This ACLU article breaks down cell phone data storage.

How Long Is Your Cell Phone Company Hanging On To Your Data?
http://www.aclu.org/blog/technology-and-...-your-data

.. and here's another article on that very from ComputerWorld

How long does your mobile phone provider store data for law enforcement access?
http://blogs.computerworld.com/19016/how...ent_access

How long does your mobile phone provider store data for law enforcement access?

as far as ISPs go it likely along the same lines but the sheer size of things such as Google's data centres (this is a video tour of just one of them) beg to differ citing reason.