Official line
Yahoo Messenger discontinued.
Yahoo · Messaging · Product
1998–2018 · 20 years in market
Launched
Mar 9, 1998
Discontinued
Jul 17, 2018
Cause of death
Lost to a competitor
Evidence
Unsourced
IM with avatars, buzz, and webcam. A default of the 2000s, shut in 2018 after the world moved to phones.
Yahoo Messenger discontinued.
Editorial reading
Desktop IM lost to mobile. Yahoo had no WhatsApp-scale identity and no reason to fight.
A chat network is only as strong as the device people carry. Desktop-first IM died with the PC-as-phone.
Unsourced — editorial reading
No primary source is attached yet. Treat the interpretation as editorial, not a citation.
Meta
The address book became the identity.
Same company, category, or cause of death.
Yahoo
2005–2009 · 4 yrs
Yahoo’s social network and blogging mash-up, closed as Facebook took the graph.
Yahoo
1999–2013 · 14 yrs
Online file storage before Dropbox made sync obvious. Shut in 2013.
Yahoo
2005–2021 · 16 yrs
The internet’s junk drawer of questions. Closed in 2021; the archive became a punchline and a research hole.
Yahoo
2007–2015 · 8 yrs
A visual programming tool for remixing RSS and APIs. Beloved by power users, killed as Yahoo shed experiments.