Um, I don't find it that hard to find the op's later posts because they have a green bg. So do my own, though, which sometimes can confuse me for a minute. But Lona, do you mean the op's type should actually be in a colour? Good idea!
I don't think there is always a problem when someone posts without having read every comment. Their post might be a bit off if they've missed an update, of course. But if someone doesn't fully read a post that they are responding to, that's when I think their words might be hurtful. If the op says, for example, "Ds and I were so close, but dil has come between us," and a poster only reads "dil has come between us," they might reply, "You probably weren't close to ds before he met dil." That would hurt, I imagine, but be due to poor reading.