Yep, usually "new" is all I get before it's near the top of the list. Sometimes I even use the "bookmarks" menu, but that's pretty rare.
Although, the YC staff might consider the influx of new users to be counterproductive, and also the current url does have 'ycombinator' in it.
But in any case, first come, first serve. Just ask Nissan Motors. Or whoever owns nissan.com
But I don't think getting the money would be an issue - though I guess a lot depends on how much the domain is actually worth, and whether they planned to do something crazy like add paid accounts to take advantage of the higher visibility.
That's classic example of "Content is king" principle and how domain names might be irrelevant if you have enough popularity.
Just two letters short...