You asked about Recommendation System

13 people built something like it. 5 are gone.

That is 38% of the ones whose fate we could settle, against 23% across the whole register.

Matching
20
Gone
38%
Median life
Acquired
0

Matching launches

checked 10 hours ago · 250 probed today
LaunchedWhat it wasToday
2023-03-14
modernfontstacks.com
still up
2023-06-19
hn-recommend.julienc.me
still up
2023-12-12
aods.cryingpotato.com
still up
2023-01-19
jamsync.dev
moved
2023-04-12
librarian-ai.com
gone
2023-08-15
servicer.dev
still up
2023-05-22
wiktok.org
moved
2023-12-08
r3ply.com
still up
2023-10-06
whattoreadafter.xyz
gone
2023-04-03
pubnix.pink
gone
2023-02-03
getproduct.help
gone
2023-08-17
tripbespoke.com
still up
2023-05-16
zacksiri.dev
still up
2023-05-11
selecta.ciaran.co.za
still up
2023-05-16
heyollie.ai
unverified
2023-02-13
wiki.krxiang.com
unverified
2023-03-19
dbohdan.sdf.org
unverified
2023-10-11
vectoradmin.com
unverified
2023-10-12
zama.ai
moved
2023-04-20
designducky.ai
gone

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.