5 things hidden in Facebook that you don't know about

1)The Inbox You Didn't Even Know You Had

If you've been a Facebook user for a while, then you probably have a folder full of unread messages that you didn't even know you had: the "Message Requests" folder (formerly, the "Other" folder.) This is where Facebook sends all the messages from people you're not currently friends with. It could be filled with old high school flings reaching out or a bunch of Nigerian spammers, who knows?! Only one way to find out!

To review these messages, click the "messages" icon at the top of your home screen (a chat icon with the Messenger lightning icon in the middle). By default, you'll find yourself in the "Recent" tab of your inbox. Directly to the right, you'll find the "Message Requests" tab. After you click this, you may see a link that says "See filtered requests." Click that and then you'll see all sorts of messages from strangers on the internet. Have fun with that!

2)Download a Copy of All Your Facebooking

Want your own personal copy of everything you've ever shared on Facebook? I'm talking, ev-er-y-thing: Every post, every image, every video, every message, and chat conversation (not to mention all the settings you probably don't even think about)? You can do that! Go to Settings > General and click "Download a copy of your Facebook data" at the bottom. Follow the directions from there.

This feature lets you take a trip down memory lane, or just save your info should you ever decide to delete your Facebook account. And of course, it reveals exactly what Facebook has saved about you. You might be surprised.

3)Find All the Photos Liked by...Anyone

Go to Facebook and start typing "photos liked by" in the search box at the top. You'll see the autocomplete fill in a lot of suggestions including "me," "my husband," "my girlfriend," "my friends," etc. Try any combo and you'll get results based on your relationship status, yourself, and who gave a thumbs up to what images. You can take it further though—type in "photos liked by" followed by your friends names, or even celebrities. Add something like "from 2018" or "this month" or "last week" or the like to limit the time frame of the pics. You can even add photos "of [name]" to the query to narrow things further.

4)See All Your Friend Requests, Ever

What about all the people you asked to be your friend who ignored or deleted your request? Facebook keeps track of that. At the top of the Facebook page click the Friend Requests icon (two people in silhouette). You'll see a list of suggested "People You May Know." At the bottom, click the "See All" link. On the next page, under New Friend Requests (assuming you don't have any) click "View Sent Requests." Then you get a list of the people who hate you. Or maybe they just don't check Facebook that much. Probably both.

5)Creep On You Friends' Relationships

See a post that one friend posted on another friend's wall? You have the ability to see a detailed history of their friendship. Type in the URL with the syntax of www.facebook.com/[first name][last name], directly followed by ?and= and followed by the name of the second person. So, if you wanted to see the detailed Facebook relationship of Texas Senator Ted Cruz and Netflix talk show host David Letterman, the link would be: www.facebook.com/DavidLetterman?and=TedCruz. (As you see above, those two haven't had much interaction when that screen was captured; these days you can't even duplicate that screen, as this only works with individual Facebook users, not with Pages for brands/businesses.)

To see the history you have with someone, go to their page, click the next to Message on their cover photo, and select See Friendship. It gives you another syntax you can use similar to that above: www.facebook.com/friendship/[name]/[name]/?show_checkins=0. You're only going to see what you'd have permission to see according to each friend's privacy settings.

Be sure to check the official URL of each person—Facebook can assign strange characters into their official web address (for example, it will add a number if there is someone else with the same name) and there may be periods between first and last names. People can also put a weird username in for their actual name.