Additionally, if you get spammed by a user, do report them to Abuse or Support, if nothing else. I got spammed this morning, reported them to Abuse, and less than two minutes later, the account was suspended.
The account in question had been created last night, had no posts, and had distributed over 3,000 comments. The ones I got were identical links to a porn site. I am guessing that the other comments posted by the spammer were the same or similar.
Next, I suppose, the spammers are going to start putting journal entries in the spam journals to make it look as if there is actual human presence. *sigh* Argh.