an annonymous proxy provider will be catering for a lot of people with somthing to hide.
yeah, their personal information. Its not a crime to protect your privacy you know (well at least not yet).

DEA phoned up your ISP for a trace,
ISPs have signed up to the same code of practice that governs mobile phone companies. All records kept for minimum five years, all requests for info from police to be made available without stating why, i.e. they don't need a reason.

I worked for a mobile phone company in the late 90s and they regularly (every week) ran programs on call patterns to find suspected drug dealers phone numbers, they would then pass them on to the police.

The real belt and braces approach is to get on an anonymous proxy, from there visit another anonymous proxy, and then go to the site you wish to visit. make sure its HTTPS all the way - even though that can be decrypted in a couple of hours by governments. The worse thing that can happen is they'll think your a terrosist and come round and shoot you.