Well, I just logged in when I see that I have a new private message. I went to check it out and there I have a message sent by random user without a username. And well, in his message, he is advertising some random crap which I have no idea what they are and his message is filled with lots of hyperlinks. Probably a spambot too. I swear that PM of his appeared in a spambot topic before.
Yeah I got that too! So I just spammed him back with a bunch of s**t.