This is an issue with the main page, macrumors.com. Stories appear there with an option to rate positive/negative, IF you are logged in. But the page does not have a link to log in, and it does not automatically remember your login and log you in, as the forum pages do. So if you enter the site at the main page you have no way to rate the stories there. You have to go to the forums tab, which then auto logs you in (or you can manually log in from there) and then return to the main page which now gives you the option for rating stories. I didn't figure this out for a long time. I couldn't see how people were ever able to rate the stories! So I suggest this change - let the main page autolog you in as the forum pages do, and/or put a link for logging in on the main page.