You asked about Feedback

8 people built something like it. 4 are gone.

That is 57% of the ones whose fate we could settle, against 23% across the whole register. 1 were acquired.

Matching
14
Gone
57%
Median life
Acquired
1

Matching launches

checked 9 hours ago · 250 probed today
LaunchedWhat it wasToday
2021-02-11
docs.particubes.com
unverified
2021-12-06
postdrc.com
gone
2021-05-08
hackerearth.com
unverified
2021-08-01
plumberplan.com
unverified
2021-01-14
scalajobs.dev
unverified
2021-02-15
letsflyby.com
gone~45mo
2021-01-01
AI-led market research interviews, no scheduling, instant insights. · unsurvey.ai
acquired
2021-07-02
feedbackforgrowth.com
gone
2021-02-09
blog.alexellis.io
still up
2021-02-14
prodcamp.com
still up
2021-05-02
3am.engineering
gone
2021-02-13
flowall.io
unverified
2021-02-22
kanji.club
still up
2021-02-02
qrfeedbackcreator.com
moved

How this compares

How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.