This promotion has been around for a little bit now. Hilton is offering free Gold status (instant) & 40,000 bonus points after 4 stays.
Hilton Gold status is good through May 31, 2013.
The 4 stays for the bonus points need to be completed by May 31, 2012. If you don’t planning getting the bonus points, this promotion is still great to sign up for the Gold status alone.
Originally the promotion required only the first 6 digits of the Visa Infinite credit card, however the web site now asks for the full 16 digits to check if you are a card holder, so it’s a bit tougher to get.
Don’t be discouraged though, you could use a credit card number checking tool available online to confirm if your Infinite CC number happens to be valid, http://www.ee.unb.ca/cgi-bin/tervo/luhn.pl
the digits need to sum to ten (end in zero) based on the algorithm.
One of the 6 digit CC headers for the Visa Infinite # include 442394, then you can use the algorithm checker to make sure the remaining 10 digits are valid. Enjoy your Hilton Gold status!