Well, he could be the heir that writing was talking about (either of the Protector or Slytherin, really) and still not know anything about who's doing this stuff. Right? I mean the writing said 'Enemies of the Heir Beware'. It didn't say 'Look out if you're somebody I don't like, signed Harry Marvolo.' Right?

I'm just saying, it could be anyone who wanted to impress Harry, or, okay maybe not that because he'd have to know who'd done it in order to be impressed, but maybe it's somebody who is so, y'know, interested in Harry that they wanted to do something for him that they think will make other people be more impressed with him? I know I'm not explaining that right, but there are lots of people who are kind of mad about Harry--like the way loads of girls seem to be about Lockhart, but not just girls and not just because they think he's cute ('cause he's not like that, y'know) but because of who he is, right? And I think it could be somebody who's kind of mad about Harry and the Protector in that way. If so, it's pretty sick, but I think there are people like that, who'd do stuff like that.