What does the + sign mean?

[Nintendude]

If anyone looks at the bottom of the Index at the userlist on some of the names, to the right of the name there is a + sign there, does anyone know what it means because I don't know if it's driving me nuts or if there is something to it.

 

[Spartan 037]

i think it signifies that you and that person are friends....

 

[Eled]

Um, they've been on longer than you? No clue.

 

[AlexSpartan177]

i think it signifies that you and that person are friends....

Exactly