Up Arrow on Facebook

What it signals here

reaction meaning

Older users interpret it as a literal thumbs-up substitute or a 'like this' prompt, similar to early Facebook share-bait.

comment use

Boomers often use it to literally mean 'see above' when referring to a previous comment in a thread.

boomer interpretation

Frequently misused as a general positivity symbol — equivalent to giving a thumbs-up or saying 'great post!'.

group use

Group admins use it in pinned posts to say 'read the rules above' or to direct members to important announcements.

See it elsewhere