Welcome to what Stack Overflow moderators have each and every day :) Seriously though, for those people who actually care to read, there's a pretty prominent Rules link on Answerama, and those rules are actually fairly detailed about SE rules, and they also link to the FAQ.
Lots of what hit you tonight were just people who saw
blah blah WIN blah blah FREE blah blah JUST POST A QUESTION
on Facebook, and unsurprisingly, crap rained from the skies. Although a few good things did come out of it, too.
We can probably learn a lot from this influx, but I wouldn't take it too seriously. Here's an answerama.com network graph:
(times are UTC; the Facebook post was at 18:03). There was a big spike of course, but it's not like this
sh load of stuff that was dumped on scifi.se is going to continue like in the first 30 minutes.
If anything, some of those people new to the system who came here today and who actually found it nice that on some random internet forum you suddenly get asked "Do you have a reference for this? Can you back up this claim?" may turn out to explore the site more and turn into avid users. Other Futurama fans who notice the site may have the same "fate".
I wouldn't worry about what happened tonight; it's not exemplary. And while we're at it, a big shoutout to you, the other moderators, and the community for handling it an awesome and helpful way.
We'll of course keep looking at what's happening, and draw conclusions if necessary. But I'm fairly sure that the amount of... things... we saw today was an exception. For now anyway. As I alluded to in my first sentence: Once Sci-Fi & Fantasy has the size of Stack Overflow, you'll remember the good old days and tell the younglings, "Oh, how I miss the quiet days of Answerama".