You can buy full Credit card information on the internet for as little as 50c
The only problem,is when you buy goods over the internet with a stolen credit card,you need said goods delivered to an address.
Instead of heving these goods sent to a traceable address,internet criminals send them to the address of unwitting acomplaces.(ie you)

when law enforcment get involved,it is your name and address that is last in the chain.

You wouldnt let a stranger get a bank loan out in your name ....would you?