What does the order of friends on the Facebook friends list mean?

[asdf]

Like only certain people keep appearing on the top 10 on the friends list,something like that. What is it based on?

[Atish Ranjan]

i think it depends upon their activity on facebook.. who does most recent activity on the Fb he/she would be shown on front ...i think

[debijs]

~~It's an app and it shows the people who responded the most to your post. I believe it's called TOP FANS~~

[Rom Cartridge]

According to Facebook:

“Friends who you publicly interact with the most appear first on your profile. Examples of public interactions include Wall posts, comments and mutually attended events — Facebook will never show friends based on whose profiles you choose to view or who you interact with over messages and chat.”