You know, the list of people labeled "friends" on various notable websites such as Facebook and Roblox. And you probably notice that some people have large amounts of people, and those with small lists of people. It's probably obvious at this point that those with a large amount of people probably have little to no relation to the people on their list, maybe from playing the same game or being in the same server for a couple minutes. And sometimes it's because of "bribes" by the games that persuade you to add friends to get more virtual currency, which, in turn, could promt you to find people who play the game and add them regardless of who they are.
I, personally, only add people I know, and people who are good friends of mine. Being in a server with someone for a couple minutes, maybe over an hour, doesn't make him and I auto-friends. I denied any friend requests that were utterly random, and accepted those who actually want to be my friend, and not have another one of one thousand people on their list.
tl;dr: Do you add "real friends" to your lists, the people you know IRL, or someone you're good friends with in-game? Or are you one of those "I accept all requests!" people?