The Straight Dope: Do mosquitoes prefer certain blood types? Plus: Do tall men get more skin cancer?

The Straight Dope: Do mosquitoes prefer certain blood types? Plus: Do tall men get more skin cancer?: "Generally speaking, skeeters favor people with type O blood over those with types A and B blood, confirming the earlier research. (2) They really favor type O secretors over type O nonsecretors and type A secretors."