When I type in ‘news.’ Firefox still gives me ‘hackernewsgrid.com’ as the first result, even though I haven’t visited that page in years, and in fact it is completely down.
I’m not sure how the omnibar works, but I’m not extremely impressed.
When I type “n”, I’m likely either going to news.google.com or HN. Firefox will guess correctly that I’m thinking of HN and fills that in as the URL. However, the main HN URL and Google News are something like 8 and 9 in the list. Everything above those two is a mix of things that happen to have an “n” somewhere in the URL that I may have recently visited.
As the grandparent comment says, you just get used to how Firefox works. For example, I would've never even thought to type "news" to look for hackernews in the omnibar after using it so long-- I just instinctively know that Firefox will find it easier based on domain name, so I type "yc" for "ycombinator.com"
I can see how this is going to be confusing for a new Firefox user, but it's easy to get used to.
I’m not sure how the omnibar works, but I’m not extremely impressed.