Hilton Hotels
Apparently, Apple Safari is not supported by some large companies (like Hilton Hotels)
I just got off the phone with the Hilton Hotels. The have a frequent customer program called Hilton Honors.
I tried to Login to the website ( hhonors3.hilton.com ) and it failed saying something about needing a "reCAPTCHA"
I called the technical number at Hilton. I was told that their website does not support Safari.
They asked me if I would install Mozilla or get on a PC.
I told them I'd wait until Apple and Hilton got it worked out.
Not sure what reCAPTCHA is, but I really don't care unless there's a simple setting to make it go away.
iPad, iOS 7.1.2, mini