Best Way to Monitor Credit (pay, credit report, accounts, sell)

[TAM88]

Are there any free, or cheap options to monitor your credit and credit score? I've seen Credit Karma ads but am wondering if they can be used to monitor inquiries on your credit, changes to addresses reported, changes in status of accounts, etc.

[davebarnes]

CreditKarma
Just ignore all the crap they try to sell you.
Not a FICO score, but close enough.

[nkull]

I used to pay for monitoring, but now I just check credit karma from time to time... They are not true FICO scores, but I can look at the 2 credit reports that they cover for line items that should not exist. I get my true FICO scores now each month from my various credit cards for free (All 3 now covered).