Yeap the whole thing is messed up, I used to use yahoo for my chat and pm, but I got so annoying with the everytime logging on getting about 40 messages from Porn bots. Also Booting annoyed me. Also like said above there is rooms for kiddy porn and stuff like that which is not shut down, surely stuff like that breaks the law, even if they are user made rooms some stay open forever, You would think yahoo would shut them down even after I reported it to them, it still goes on.
That said there email service is far better than Hotmail ;-)