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
Usually two. Corporate AmEx for business and Citi 2% for personal items when on a business trip. Citi plus BofA card with no overseas fees for personal travel - one primary, one backup depending on where I am in the world.
EDIT - I guess it's 3 when I'm overseas on business.