SearchEngineLand‘s Dan Sullivan goes into detail on how Facebook’s “Posts By Everyone” feature works. It’s an interesting read, the beginning of which is below. Even more interesting is some of the stuff people expose online which I’ve outlined at the bottom of the article.
Searching Everyone’s Updates
You might have missed Facebook’s “Posts By Everyone” feature. It’s easy to overlook because search results aren’t shown by default. Consider this search for hungover:
When you start typing, Facebook suggests some options right within the search box. Pick any of those, and you go directly to a person, page or application, rather than overall search results. It’s easy to do this by hitting enter, so that you never get the search results at all.
If you go to the very bottom, there’s a “More Results” option as highlighted above. Click that, and a broader set of results appears: 
Notice on the left-hand side of the results, there are options to get results back from all these categories:
- All Results
- People
- Pages
- Groups
- Applications
- Events
- Web Results
- Posts By Friends
- Posts By Everyone
In the search results above, you can see that “All Results” is highlighted, so I should be getting back results from all these categories. However, that’s not what happens. Instead, Facebook only brings back results from matching Pages, Posts By Friends and Web Results. That’s it.
(This, by the way, is just one example of why I often joke to people who warn that Facebook will beat Google in search that Facebook has enough problems searching Facebook itself, much less the entire web.)
Now look what happens if I drill in to the “Posts By Everyone” category:
Suddenly I see what Facebook failed to show me before, all the people on Facebook telling the world about their hangovers. You can read the rest of the post which details mobile sharing and how to control your privacy here.
Now for the dirty little secrets
- See who’s skipping work
- See who’s skipping school
- How about finding out who’s posting that they are smoking weed
- And who’s calling their boss an idiot
- For the sexual freak in us all some post about nipple clamps
- And finally there’s… uh… rope bondage.