Since maybe yesterday many people will receive a random comment with a link on one of their works, which says:
rofl this may be relevant to your interests
PLEASE DON'T CLICK ON THE LINK!!!
It seems like their is some kind of virus. After you clicked it, your account will do things by it's own: It will spam this link everywhere here on dA.
Maybe it starts to crazy around right after you clicked on it and stopped, when you are logged out.
If you have already clicked on it, change you password as a precaution.