Quite sorry about the confusion; but no harm done, at least.
If you have showdead turned on, there are lots of spam posts around - mostly just bunches of links from users who are dead (they can post stuff and see their own posts normally, but no one else can) - but this strategy is rather worrying, because it's harder to catch automatically. On the upside, the community is large enough now that most of these posts should be caught and flagged.
Simply skimming through noobcomments looking for spam might not work as a strategy anymore, though, especially if they start grabbing comments which originally contained links (especially citations) and then replacing them with legitimate looking links to new sites; basically, if they figure out a way to stop the links from looking spammy, they're going to require a bit more human effort to catch, which might let lots of them get through - especially by posting on older articles which have fallen off the front-page.
(Great, I'm giving advice to spammers now. Bit worried about posting this, actually, but someone else is going to think of it - probably already has - so I'm probably not doing any harm.)