I think it's legit. I'm on there and so are 5 of my friends. I also logged into the fastlane website and there was an "Accept/Decline" thing on the main page.
I'm a first year and I didn't have any publications as an undergrad. This was my second time applying and I got mediocre reviews last year(lots of 3's out of 5). This year I looked at a bunch of winning essays and really milked the "intellectual merit" and "broader impacts" it sucks that you almost have to be cheesily specific about how you are making and impact and that you have intellectual merit, but it won't get their attention if you are subtle about it.