Your Facebook profile page has a "Friends" box in the lower left corner that, by default, displays a list of six random friends. This selection is completely random and you’ll see a different set of faces (or pictures) if you refresh the Facebook page.
There’s however a little-known feature in Facebook that lets you decide who shows up in that Friends box. And if your list of best friends is more than six, even that can be accommodated without requiring any Facebook App.
All you have to do is click that "edit" pencil in your Friends box and type the names of your best friends in the box that says "Always show these friends." That’s it.
Some more Facebook tricks: