This was a very meandering project, and trying to corral it into some sort of coherent narrative was a bit of an undertaking on its own. Hopefully it makes some sense.
Hi Viktor! Really cool write-up, thanks! Uruky is already using the `nsfw` param, but set to `0` or `1`, and I see in your example this looks like a new value option (`2`) that's "better" than `1`? How "safe" is it to implement it as the value to send when someone wants SFW results?
Have you seen many examples of websites labeling themselves, perhaps using rating meta tags (<meta name="rating" ...>)? Self-labeling seems valuable in some ways, but I don't think I've seen it catch on.
1 filters 'harmful' sites per the UT1 blacklists
2 is 1 + the new NSFW filter.
The new filter works pretty good in my assessment. It's not infallible, but it gives significantly cleaner results.
And if you do find queries it fails to sanitize, I'd love to hear about them.