The VISA card for millionaires has signed up lots of takers in its first year. The VISA Signature card now has more than 500,000 cards. The card is targeted at the 9 million U.S. households with annual incomes above $100,000.  Issuers of the premium card include Merrill Lynch, Associates, Capital One, Citibank and First USA. Core features of the VISA Signature card include concierge services, an air mile rewards program, a preferred travel program, an assistance program, $1 million of travel accident insurance and a purchase protection program. Cardholders earn one point for every dollar spent using the VISA Signature card with accumulated points redeemable for free air travel with no class or seasonal travel restrictions when purchased 21-days in advance of travel. The card carries an annual fee that is determined by each issuer. For more information www.visa.com.