How reliability works
What it is
Reliability is a short answer to one question a stranger has before they meet you: are you likely to actually turn up?
It is a tier — New, Regular, Reliable, Trusted, Pillar — next to plain counts, like "8 attended" or "hosted 3". There is no score, no stars and no percentile, and there never will be. A number invites people to work on the number instead of on showing up.
Two separate standings
One as a guest, one as a host. They do not mix. Somebody who reliably turns up to other people's activities but abandons their own should not look flawless, and somebody who is a careful host should not be marked down for a plan that fell through as a guest.
What moves it
Turning up to something you joined. Hosting something that runs. Cancelling early enough that your seat is useful to somebody else.
Downwards: cancelling at the last minute, joining and not appearing, or calling off something you are hosting once people have already made plans around it.
Cancelling is not a punishment in itself. Cancelling with notice is close to free — it is the not-telling-anyone that costs, because that is what wastes other people's evening.
Who decides whether you turned up
The people who were there. After an activity ends, everybody who held a seat — the host included — is asked who made it.
The host does not decide this alone, and neither does any one person. A single answer never marks anybody down: at least two people have to have answered, and it takes a majority of them. If two say you were not there and three say you were, you were there.
A tie counts in your favour, and so does silence. If nobody answers about you, you turned up. If nobody at all was confirmed present, nothing is recorded against anyone — that reads as an activity that did not happen rather than everybody standing everybody else up.
Nobody is ever told who said what, and nobody can vote on themselves.
What other people can see
Your tier, your counts, your show rate, and any positive tags people chose — welcoming, punctual, organised, would join again.
Nothing negative appears on your profile. A complaint about a person goes to us, not onto their page. The only trace a no-show leaves is a tier that moves slightly, which is what it was for.
If something looks wrong
Your own profile lists everything that shaped your standing, in words, with dates. If one of them is wrong, say so and we will look at it.
Nothing here is permanent. Recent behaviour weighs far more than old behaviour, so a bad month stops mattering fairly quickly if the months after it are ordinary.
Being new is fine
A new account does not start at the bottom. Somebody with no history is somebody nothing is known about, not somebody who has done something wrong, and most activities are open to exactly that person.
A host can ask for a minimum standing on an activity, which is there for the handful of cases that warrant it rather than as a default.