Yep. We have been deleting those links whenever we see them in posts for quite a while, but most link spammers are so ignorant that they just keep doing it.
It looks like signature links, which we have allowed, are also going to be a target if they are spammy. Anyone with keyword stuffed signature links should start cleaning them up before the next Penguin update hits.
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin