BTW, this is Show HN: https://news.ycombinator.com/show . Note, there are guidelines, but as far as I can see your site follows them already so I wouldn't worry too much about them. If you add a new feature, it might help to draw attention to that in the future, but don't create a new "Show HN". On a side note, it may be useful to keep a blog on the side about site news, feature updates etc...
BTW, this is Show HN: https://news.ycombinator.com/show . Note, there are guidelines, but as far as I can see your site follows them already so I wouldn't worry too much about them. If you add a new feature, it might help to draw attention to that in the future, but don't create a new "Show HN". On a side note, it may be useful to keep a blog on the side about site news, feature updates etc...