You know that you can save the bitaddress.org page on your computer right?
No need to hope for the site to exist in the future.
When you run the proccess of private key creation using bitaddress.org is it enough to be offline or should you be made to jump through hoops by burning Linux installation, running it on a computer with harddrive plugged out, no internet connection etc.?
If you are 100% sure your computer is safe from spyware...