I'm not a regular of Server Fault, but I figured I'd just reiterate what Makyen said in the comments in the form of an answer, as I am a participant in Charcoal, the group that runs Smoke Detector.
This particular type of spam influx has been going on for awhile. It typically spams some form of link shortener (such as cutt.ly) or the "crackstreams" link they're using to showcase whatever event they're trying to get views for.
Ordinarily, Smoke Detector would've been configured to cast the necessary spam flags to either delete this kind of spam outright, or at least cast enough that one or two humans could manually cast the 5th and/or 6th spam flag to delete the post. We are currently experiencing an outage of Metasmoke, the site that facilitates autoflagging, because our host is performing maintenance that's going to last somewhere in the ballpark of 24 to 48 hours. As a result, autoflagging is not being performed, which results in certain spam posts not being deleted quite as quickly as they normally would.
So... This is just an unfortunate circumstance of Charcoal performing maintenance, and will be resolved soon. In the meantime, manual flags work just fine, so please keep using them appropriately!
If you're interested, Smoke Detector is still running, just not generating Metasmoke reports. You can monitor Charcoal HQ for incoming spam reports, and flag new posts if you feel it's necessary. At the present time, the spam reports from Server Fault have died down, though.