First-order effects

• Users on desktop and iOS can retrieve specific posts from a friend's or Page's profile by keyword instead of paging back through years of updates, making older public posts materially easier to find.
• Profile owners gain a new exposure surface: content they assumed had scrolled out of view becomes searchable by anyone visiting their page during the test.

Second-order effects

• Every query run inside a profile deepens Facebook's index of user-generated text, feeding the same search infrastructure behind its earlier keyword-search tests and strengthening its case as a retrieval layer over social content rather than just a feed.
• Pages and creators whose posts become searchable get a second distribution channel alongside News Feed ranking, which pressures them to write posts with findable keywords rather than ephemeral phrasing.

Third-order effects

• If the test generalizes, the trajectory runs from chronological feeds toward user-directed retrieval — search, Explore Feed, topic taps — shifting platform power from whoever ranks the feed to whoever indexes the archive.
• That shift raises the stakes for post visibility controls, since a searchable-by-default history turns past public posts into a durable, queryable record unless users actively prune or restrict them.