Yeah, I've been fighting this group of spammers since the Oscars. SmokeDetector is why it hasn't been seen much by people, but has been a real thorn in the side of the moderators. I managed to convince SE Safety to add a few things to our blocked user input list, which has changed some behavior. Yesterday's NBA-fest was the first real test for whether that was enough to dissuade our spammers.
Some, but not enough.
Considering how fast these usually get swatted down (within 5 minutes in most cases) the only thing that explains their persistence is they're paid by the post, not on results. That's a hard incentive to fight.