Let's turn this one over to creator Tom Scott:
What's this all about?
FACT: A lot of people on Twitter are stupid. Many of these people follow celebrities and try to send them messages. But which celebrity's fans are most stupid? It's time to find out.
What do you mean by 'stupid'?
Stupid Fight can't go out and administer an intelligence test to each person that's sending messages to a celebrity. So instead, it estimates based on several stupid indicators. Are they using twenty exclamation marks in a row? Do they endlessly use the abbreviation 'OMG'? Do they seem incapable of working out where their Shift key is? These indicators have a strong correlation with the message, and its sender, being stupid.
Now, I don't think that I'm a celebrity by any means, but I still think my followers and I got jobbed out by whatever algorithms he's using. Like this Scott guy says, this thing can't detect irony, so already I'm hosed, since almost everyone I follow on Twitter spends at least half the time being ironically stupid. Plus, there are all those "@Mobute" tweets sent to me that are just these other people retweeting the idiotic and crazy things they've baited teapartiers into saying to them. That's not even their original content. They might be throwing bait-sized stupid into the water, but when they're landing some 300-pound largemouth ass, his size and heartily robust moron content is all on him.
Anyway, you win this round, Bieber. I'm a Bieber Bro, now. I know which way the tweets are blowing. But don't think I won't be back, Justin. And don't turn yours.