You can't let Javascript on the website anymore. Hamhamed made a program that gives you karma and spams the Main Lobby chat wall, Foxie made one that assimilates your profile, and now Plexar has one that posts a link to pornhub in the lobby wall chat. You seriously can't let it on the website anymore.
Since my post was deleted here's the same thing I said before again:
The hearts are harmless, they just spread and can be removed. It's when some script kiddie comes along who all they can do is change the text from a heart to something stupid that ruins it.
And javascript is not the biggest threat. You have to voluntarily click links for it to do anything. This'll probably get deleted if I say what is, but I'm sure anyone with a clue knows anyway.