Saw in Angelbaby's gallery just now, "Picture required."
For my list, I think, though it's harder to determine until after I've been around'bout someone awhile... "Personality required."
(Edit: to quip a bit less, to think a bit more... people who I find add less than they drain from me, emotionally and otherwise, are the people who I have resolved to take leave of, and if they don't even add character to my memory of them... so much the easier to cut strings.)