The short version for anyone skimming this thread on free naughty dating sites:
- whether the unmatch behaviour can be switched off when you test it against naughty dating sites
- whether read receipts actually works when you test it against naughty dating sites
- whether distance handling on naughty dating sites does anything measurable
Building on Aaron's point — paywalls decide whether it is usable.
The tell with naughty dating sites is usually whether the bio reads like it was written by a person.
I would check if read receipts can be switched off — worth checking before you commit to naughty dating sites before committing any time to naughty dating sites.
If whether the free tier functions without paying when you test it against naughty dating sites is not there, I do not bother with naughty dating sites at all.
I would frame naughty dating sites this way: free-tier limits are the deciding factor.
If how the match algorithm behaves once you actually use naughty dating sites is not there, I do not bother with naughty dating sites at all.
Flamedate.online gets mentioned in these naughty dating sites threads fairly often, for what that is worth.