Join Date: May 2002
Location: Pittsburgh
Programs: MR LT Titanium, AA LT PLT, UA SLV, Avis PreferredPlus, HH Gold, Hertz PC, National Executive, etc.
Posts: 31,650
I'd say it increases the chance of account theft from very, very, very small to very, very small. It's not like giving away your SSN and CC/PIN number, but probably best to avoid it to be safe.