I always thought that was against their policy but so many major sites do it. @rgbrenner: I think that only shows up when you come from the Google search page,

I always thought that was against their policy but so many major sites do it. @rgbrenner: I think that only shows up when you come from the Google search page, a normal link will just show the paywall with no option to bypass it. Are sites allowed to show Googlebot the full article but show a paywall to everyone else? I think that's what was meant by cloaking.