This block system is useless

[Jin]

Why can people I've blocked still post personal messages on my profile? It seems pointless to block someone when I get a "1 new profile message" notification every time a blocked individual posts on my profile. Obviously I'm going to check it out because it could be someone I actually want to communicate with and obviously if it's the blocked person in question, I'm going to want to see what they're putting on my profile as it's no doubt something I don't want to be present right on my profile. I don't want to have to manually delete them every time either and be stuck with a "this post was deleted by jin" tag.

In user options I've only found a way to disable profile posts completely, not a way to prevent only people who are blocked from posting on them. Is there actually a way to do this? Perhaps something to do with the "approved/unapproved" posts (as I have no idea what that means)?

If there isn't a way, there really should be if it's at all possible.