As @frik noted, it uses "I'm feeling lucky" feature of Google. It requires the page to be indexed to work. If the page isn't indexed then it won't work. But since the pages you'd like to see are indexed almost always, it shouldn't be a problem.
No, that's not what I mean. I mean that the bookmarklet is working intermittently for me on any page. I'll click it, and sometimes get redirected through, and sometimes end up on a blank white page. That doesn't happen to you?
That's interesting, I see a white page for a second or two and I get redirected. If something else is happening for you, would you mind sending me a DM on twitter @umurkontaci? I might be able to fix it.
As @frik noted, it uses "I'm feeling lucky" feature of Google. It requires the page to be indexed to work. If the page isn't indexed then it won't work. But since the pages you'd like to see are indexed almost always, it shouldn't be a problem.