This looks pretty cool, and I'll definitely look at it as a Dropbox replacement.
On the negative side, your stats page doesn't have a link back to your main page, so you won't even know how many folk had a look based on this HN post. It's a good idea to ensure that all your pages have a link back to your main page.
Yeah that page which was linked to isn't really part of the website: it's a separate site entirely, which is a frontend to the data-collection service.
People aren't really supposed to link to it directly as a means of introducing new people to Syncthing...
Indeed, but you never know what page someone might submit to a site like HN, so it's usually a good idea to have a link back to your main site on all pages.
For example, they could like to your Forum page (which doesn't have a link to your main page). Or to your Github page (which has a link to the Forum, but not to the main page). Or your Docs page (which...well, you get the idea).
Sites that have witty and inventive 404 pages sometimes get those publicised. You really never know what someone will choose to submit.
On the negative side, your stats page doesn't have a link back to your main page, so you won't even know how many folk had a look based on this HN post. It's a good idea to ensure that all your pages have a link back to your main page.