I use a product through True Credit, and once a quarter I go to
http://www.myfairissac.com and pull complete copies of my credit report.
Yes, I was the victim of partial identity theft. I was lucky, I caught it early, so other than several hundred hours of my own time and a lot of Certified Return Receipt charges for dispute letters, I came out lucky.
The credit monitoring agencies out there are really quite nice, but you have to remember that even though they seem to come from a "Credit Reporting Agency" they generally do not. As such, their copies of your FICO score can be off. Thats why I use the
http://www.myfairissac.com system to get very accurate copies of my Credit and Score. They are the ones that design and maintain the Credit Scoring System.
Kinda a *****, but in the end it is worth it to know some little **** isn't ruining my good credit.