Lately, most of them don't even bother posting any more. They just want to sign up for an account, and put a bunch of spam-related links in their member profile (so web-crawlers like the spider programs employed by Google will see more instances of those links, and thus rank them higher in searches -- that's what SEO is all about) and then move on. It's been a while since we had somebody actually go nuts posting pharma links and stuff.
Anyway, thanks for reporting these. APK banned them, I deleted the account and all their posts and topics, then banned the rest of the usual overnight SEO/spammer signups, and we're back to normal.