in reply to statement in card "so what"...especially if it for an anime community that's kinda a dumb attitude. Plus (1) if it someone you don't know why do you care what they think (2) if it's someone you know agree to disagree
it's all a matter of context...
as far other apps yeah like a dating site it would be weird if all the person's pics were that. so i would agree with @HenryStill ...I want to know who I'm talking to. but there this thing called photo shop and how can you tell it really a picture of them or even an older pic. In conclusion I take profile pictures like avatars for games really.